Peter’s son was quite ill when he was an infant. Fortunately, he is doing better now. However, he missed many of the standard childhood vaccinations. Peter is trying to decide if he should get them for his son now that he has recovered. What does Peter need to evaluate his choices?

Fortunately, Peter’s son is doing better now.
There’s only a few vaccinations, personally, that I think should be taken. (Example: The tetanus shot is a vaccine that protects you from getting tetanus. Tetanus, also called “lockjaw,” is a serious disease caused by bacteria called Clostridium)
This I recommend. But some others are found to have negative side effects. Like infertility and (in females) ovarian cysts.

Personally, if I was Peter’s father. I would not

Your answer is  d.)relationship between pressure and air volume and led to the understanding of how respiration works