Question

comparing contraceptives
the is a small, flexible rod inserted under a persons skin that releases hormones to prevent fertilization.
the is worn on a persons outer body and releases hormones to prevent the ovaries from releasing eggs.
the is a dome - shaped piece of rubber placed inside the vagina before sexual intercourse.
the is worn on the penis to block sperms from entering the vagina.
sponge
cervical cap
spermicides
male condom

Explanation:

• The first blank: A small, flexible rod inserted under the skin that releases hormones to prevent fertilization is a sponge (it contains spermicide and is inserted deep into the vagina).
• The second blank: A device worn on the outer body that releases hormones to prevent the ovaries from releasing eggs is not among the given options. But if we consider the context of the given options, there is an error here as the options don't fully match this description. However, if we assume it's a mis - phrasing and we are to pick from the given options, there is no correct match. But if we consider the next part:
• The third blank: A dome - shaped piece of rubber placed inside the vagina before sexual intercourse is a cervical cap.
• The fourth blank: A device worn on the penis to block sperms from entering the vagina is a male condom.

Answer:

First blank: sponge; Third blank: cervical cap; Fourth blank: male condom.