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.
Of all the ancient calendar systems, the Maya and other Mesoamerican systems are the most complex and intricate. They used 20-day months, and had two calendar years: the 260-day Sacred Round, or tzolkin, and the 365-day Vague Year, or haab. These two calendars coincided every 52 years.
Answer:
9km/sec is the speed of the boat.
