Which best describes abstinence? It is only moderately successful at preventing STIs. It is the only method that is 100% successful at preventing STIs. It is almost as successful as vaccines at preventing STIs. It is the least successful way to prevent STIs.

It is the only method that is 100% successful at preventing STIs.

Explanation:

Abstinence occurs when individuals decide to spend a period of time, or to stay permanently, without participating in any type of sexual intercourse. As there is no sexual contact between people, it is impossible for there to be cases of sexually transmitted infections between them.

Although there are many efficient methods of preventing this type of infection, abstinence is the only one that promotes 100% effectiveness.

the sentence does not violate the phrase structure second rule (introduced by noam chomsky) because noun phrases consist of a determiner such as a, the or every, and a noun. in the sentence, the noun phrase the cake includes a determiner (the) and a noun (cake).

on the other hand, the first rule indicates that a sentence encloses a noun phrase, followed by a verb phrase. the example sentence can be analysed as follows:

john (n) + ate (v) + the (det) + cake (n).

d) sarah's natural reaction to being accepted into college suggests that she has no other dreams.