Ana: Mi amigo Juan cubre los temas de actualidad. Hace investigación antes de escribir la historia.
A.
reportero
B.
editor
C.
maquetador
D.
corrector de textos

By definition we have to:

A reporter is a journalist whose main activity is to collect and present information about a certain event or event of some actuality, which frequently must be done from the place where the significant events occurred or occurred.

The definition in Spanish is:

Ana: Mi amigo Juan cubre los temas de actualidad. Hace investigación antes de escribir la historia.

Answer:

A. reportero