Me with this spanish question. it is about gustar.

In Spanish, there are affective verbs, like "gustar", where the grammatical subject, which often goes after the verb, represents a thing or a passive person, while the indirect object is the true logical subject of the phrase. It is not a subject or active agent, but an experimenter who talks about his emotions, ideas, interests or preferences. The affective verb always agrees with the grammatical subject (las enchiladas, los deportes). When the subject is a noun, he always has an article. The subject can also be an infinitive or a relative phrase, then the affective verb is conjugated in the singular (practicar, estudiar, cantar).

Answer 1. A mí me gusta practicar deportes.

Explanation : the grammatical subject  is an infinitive, then the affective verb is conjugated in the singular.

Answer 2. A mí me gustan las enchiladas.

Explanation : the grammatical subject is a plural noun, then the affective verb is conjugated in the plural.

Answer 3. A nosotros nos gusta estudiar.

Explanation : the grammatical subject is an infinitive, then the affective verb is conjugated in the singular.

Answer 4. A nosotros nos gustan los deportes.

Explanation : the grammatical subject is a plural noun, then the affective verb is conjugated in the plural.

Answer 5. A ustedes les gusta cantar.

Explanation : the grammatical subject is an infinitive, then the affective verb is conjugated in the singular.

Answer 6. A ustedes les gustan los deportes.

Explanation : the grammatical subject is a plural noun, then the affective verb is conjugated in the plural.