Answer:
pudieron
Explanation:
Esteban y tú pudieron ir al parque de diversiones ayer.
is the most that makes sense.
El doctor es el señor Guzmán. Él <em>ayuda</em> a mi madre.
Answer:
Vaquero
Explanation:
Vaqueros means cowboys and i assume that people of old age are not gonna dress as lawyers or the president. And Viudos means widower and the sentence doesn't say that anyone died.