Select all the statements that apply to the sentence below.

to try to write certain sentences is difficult.
the sentence is correctly written.
the sentence contains more than one infinitive.
one infinitive is inside another infinitive phrase.
the infinitives are beside each other, but one does not contain the other.

1, 2, 3

Explanation:

The sentence is ''To try to write certain sentences is difficult.'' and it is correctly written. Verbs are correctly fitting in the sentence and its purpose.To try and to write are two infinitive verbs in the sentence that is why the second option is correct.At the beginning of the sentence, we can see here an infinitive phrase because one infinitive is inside another. ''To try to write'' is an infinitive phrase and it has noun function. There are two ''to'' in the sentence and the second ''To'' infinitive is inside the infinitive phrase that is the main in the sentence. That is why the third option is correct, and the last one is not.