The answer to this is B. It is the endocrine and the excretory systems that are known to provide the help needed to regulate body temperature. There are different glands that make up the endocrine system like the pancreas, the thyroid, and the gonads. All of these glands are responsible for regulating people’s body temperature.
To further help with the regulation, people would need to release the heat, for example, through their urine which means that the excretory system is involved. Do you remember the last time that you had a fever? Your urine may be warmer than usual. It is your body’s way of removing the excess heat and hopefully regulating your temperature.