The correct answer is "There's no smoke with electric trains." This is because electric trains do not produce smoke as they use electricity as their power source instead of burning fuel. Therefore, there is no smoke to blow in any direction.

The answer "It didn't roll" is correct because roosters are male and do not lay eggs. Therefore, the egg cannot roll in any direction since it doesn't exist in the first place.

The correct answer is Cheetah. Cheetahs are known for their incredible speed and agility, making them the fastest land animal. They can reach speeds of up to 70 miles per hour in short bursts, allowing them to quickly chase down their prey. Their slender body, long legs, and flexible spine contribute to their exceptional speed and acceleration. Cheetahs have evolved specific adaptations such as non-retractable claws and a lightweight build to maximize their running capabilities.

The correct answer is "Dinner" because dinner is a meal typically eaten in the evening, not in the morning for breakfast. Breakfast is the first meal of the day, and it usually consists of lighter options such as fruits or eggs. A whole turkey is also an unlikely breakfast choice, but dinner is the only option that is completely inappropriate for breakfast.

The correct answer is "None because it's already built." This answer is correct because the question states that it took twenty men ten hours to build the wall, implying that the wall has already been built. Therefore, there is no need for four men or any additional time to build it.

The question is asking how many eggs a cock can lay in a week. However, cocks, or male chickens, do not have the ability to lay eggs. Only hens, or female chickens, have the ability to lay eggs. Therefore, the correct answer is zero.

The word "alive" means having life or living. Anything that is alive has the potential to die or be killed. Therefore, the statement "Anything that is alive can be killed" is true.

If one shirt dries in one hour, it means that each shirt takes one hour to dry individually. Therefore, if there are ten shirts, each shirt will still take one hour to dry. The number of shirts does not affect the time it takes for each individual shirt to dry.

The correct answer is "By sleeping during the night" because if someone sleeps during the night, they are not technically sleeping for eight consecutive days. The question is asking for a way to not sleep for eight days, implying that the person should remain awake for the entire duration. By sleeping during the night, the person would still be awake during the day, therefore not sleeping for eight days straight.

The answer "Every month has 28 days" is correct because even though some months have more than 28 days, every month does indeed have at least 28 days. This is because the question does not specify that it is asking for the number of months that have ONLY 28 days, but rather how many have AT LEAST 28 days. Therefore, all months have 28 days or more.

Stairs go up and down, but they remain fixed in the same location. Unlike a scale, which can be moved around, or a wheel, which can roll, stairs are stationary and provide a means of moving between different levels of a building. Therefore, the correct answer is stairs.

The reason the soccer ball comes back to the little girl after she kicks it is due to the force of gravity. Gravity is the natural force that pulls objects towards the center of the Earth. When the girl kicks the ball, it initially moves forward due to the force of her kick. However, gravity acts on the ball, pulling it back towards the ground. This causes the ball to eventually come back to the girl's location.

The given correct answer is "There's no such thing as an elephant with one hand." This answer implies that it is not possible to lift an elephant with one hand because elephants have four legs and no hands. Therefore, the concept of an elephant with one hand is non-existent.

Drowning typically refers to the act of being submerged in water or another liquid and suffocating as a result. Since fire is not a liquid, it is not possible to "drown" in it. Therefore, the correct answer is "Drown in fire."

A towel gets wetter when it dries because when a towel is wet, it absorbs water and becomes damp. When it is left to dry, the moisture evaporates, and the towel becomes completely dry. So, in this context, a towel gets wetter when it dries because it goes from being damp to completely dry.