4-6 months, infancy because the child can only really hold his head up. The mother is talking about her baby.
Answer:
The pituitary gland signals to release hormones so I think it is correct
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.
I believe the answer is false.