Answer:
I think The answer is sponge.
Explanation:
Condoms are also known as "barrier" methods of birth control; they physically block or otherwise prevent sperm from entering the uterus and reaching the egg for fertilization. The diaphragm, cervical cap, and sponge are used along with spermicide (a chemical substance that destroys sperm) to prevent pregnancy.
My guess is that the child will get his blood pressure checked at least two more times. It's routine to get it checked at least three times total.