The answer is B. Hypothalamus
Hypothalamus is responsible for homeostasis, such as temperature, thirst, drives and circadian rhythms. It helps mediate physical expression and sensations of emotions, or simply called limbic influence. It also functions for endocrine regulation and autonomic regulation. It has several circumventricular organs and neuroendocrine neurons making it unique.
International Labour Organization
Answer: Earth's axis always points in the same direction. Because of this, the part of Earth that receives the most direct rays from the Sun changes as the Earth travels around the Sun. At the equinox, the Sun's rays shine most directly on the equator, and the Northern and Southern Hemispheres get the same amount of Sunlight.
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