The correct answer is option C Cirrus clouds are delicate, thin feathery clouds that are made mostly of ice crystals. They are known for their wispy appearance, typically appearing as light grey or white. Cirrus cloud is the most common type of cloud seen in the sky. It is often located 20,000 feet above the ground.
The cloud also indicates that the weather is about to deteriorate, as it also shows that the storm is approaching. Cirrus is known to raise the temperature of the air beneath the main cloud layer by an average of 10 °C (18 °F). The Cirrus cloud is also formed on other planets such as Jupiter, Mars, Saturn, and Uranus.