Question

drag and drop the best option. mi padre en una oficina. trabaja trabajan trabajo

Explanation:

The sentence refers to "Mi padre" (my father), which is a singular third-person subject in Spanish. The correct present tense conjugation of the verb "trabajar" (to work) for singular third-person is "trabaja". "Trabajan" is for plural subjects, and "trabajo" is for first-person singular.

Answer:

trabaja