Daris, a marathon runner, is trying diligently to read his textbook, but he keeps finding himself preoccupied with his upcoming race. He is frustrated because he has had to go back and reread sections the textbook in order to really understand the material. Daris seems to be having difficulty with _____

The decline in the immune system helps to explain why a disease like the flu can be fatal in late adulthood

Indicate whether this statement is true or false.

The most important preparation for parenthood

A) takes place in the context of the parents' relationship. B) is having a positive relationship with one's own parents. C) involves attending prenatal classes. D) is having support from extended family.