Andrew is a teenager in a dating relationship. he and his girlfriend spend time together on the weekends. they often use alcohol and drugs, and also have unprotected sex. which of these puts andrew at the greatest risk of contracting an sti? check all that apply. he is a male.
he has unprotected sex.
he is in a dating relationship.
he uses drugs and alcohol.
he spends weekends with his girlfriend.

The correct answer is - He has unprotected sex and he uses drugs and alcohol.

Explanation:

Sexually transmitted infections are transferred by sexual contact with the infected person but it can also be transferred sharing the same syringes by drug abusers because STI transfers through body fluid.

Therefore unprotected sex between Andrew and his girlfriends will put Andrew at greatest risk of contrasting as STI. Apart from the unprotected sex, Andrew can contract STI if he and his girlfriend are using the same syringes to take drugs intravenously.  

So the right options are -  He has unprotected sex and he uses drugs and alcohol.

i believe the answer would be 'd'.

hope this !