Están adentro de mi boca. a. los labios b. los dientes

Los dientes translates into teeth and los labios translates into the lips. So this sentence refers to something that is inside my mouth, so the more logical answer is los dientes (teeth). On the other hand, están is the conjugation of the verb estar for the third person singular in the simple present. Finally:

Los dientes están adentro de mi boca

answer: what's your question?

explanation:

a. practice makes perfect right?

b.i don't think that's a good choice

c.hmm..are you sure about that

d. that shows how immature that person really is

answer ..a

~hope this ~