Answer:
A. Tired
Explanation:
We can infer that in the story it’s around nighttime, as the mother is putting her children to bed, yawning, and setting her alarm clock for the morning. The fore, we can assume that she is tired and about to go to bed.
Perhaps, when the sentence says that hygiene is 2/3 of health it means that dealing with your body and your adrenal glands meaning the adrenal gland consists of adrenal cortex and adrenal medulla. So the adrenal cortex helps produces hormones that are important to life such as regulating metabolism and helps your body respond to stress, So it helps you not get diseases if you have healthy hygiene. Hoped that helped!!
