Question

Adolescent women are most likely to use contraception:
a.
During their first experience of sexual intercourse. My answers is A
b.
If they already have one baby.
c.
If they have been involved in a steady relationship.
d.
If they have just met their sexual partners.

Answer 1

I couldn't find any statistics about this question.

What does your book say?

Answer 2

IT is somewhat curious on c. Research has indicated that teens are more likely than their peers to use contraception when in a steady relationship, unless their partener is more than three years older, in which they are less likely to use effective contraception regularity.

A is most definitely wrong. Passion prevents planning.
D. is most definitely wrong.

Leaving C and b. The problem with b is that many of those babies were the result of not thinking, nor controlling, nor understanding how to use contraception correctly, and consistently. So one mistake does not preclude a second.

c. I vote for c, assuming it means.."f they <b> are</b> involved in a steady relationship <b> with a partner near their age</b>. Research tell us that.

So, make your choice. If I were the teacher, I would have more carefully worded c.