Answer: C. Melatonin.
Explanation: Melatonin is the hormone responsible for sleep and wake cycles. :)
D . None of above everyday lifestyle choices affect your physical fitness
The talk test is a simple way to measure relative intensity. In general, if you're doing moderate-intensity activity you can talk, but not sing, during the activity. If you're doing vigorous-intensity activity, you will not be able to say more than a few words without pausing for a breath.
Answer:
Oral.
Explanation:
Sigmund Freud's stages of development explains the psychological stages of the sexual development in humans. These stages explain the libido psychology of the individuals.
The first stage of the Freud's stages of development is oral. The oral stage is the stage before 1 years of age. The child is in the first year of his development. This includes the development of the child in the oral stage only.
Thus, the correct answer is option (b).
