The sentence that contains a boldface infinitive is D. Lisa wants TO GO.
It is easy to spot an infinitive - it is usually a combination of the word TO plus a verb.
A and C are incorrect because those are not infinitives, but rather prepositional phrases. B is incorrect because it is an infinitival phrase, rather than a single infinitive.
We cant answer that because you never gave us the sentence (there is no sentence so i cant find the <span>pronoun used within the object of preposition) ?</span>
The Italian sonnet was mostly used by Petrarch, and it has a specific structure. It contains 14 lines, separated into one octave (a stanza of 8 lines), and one sestet (a stanza of 6 lines).
When it comes to the relation between the structure and the theme, this means that the octave introduces the idea of love within the sonnet. The poet talks about his beloved and gives us an insight into his feelings. On the other hand, the sestet analyzes his own emotions and explains in further detail why he is so infatuated with the woman (in Petrarch's case, he always wrote about Laura).