In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".
People from all walks of life (to enjoy) the rather popular spot.

The correct option is C) enjoy.
The subject is "People from all walks of life", where "People" is a plural noun.

A finite verb is required to complete the clause. The infinitive form "(to enjoy)" cannot act as the main verb here.

For a plural subject in the present simple tense, the base form of the verb (enjoy) must be used.