For this case we are looking for the correct verb.
In English the correct verb is "be"
The conjugation of the verb in English in simple past is given by:
I was
You were
He was
She was
It was
We were
You were
They were
In this context the verb is Spanish is:
be=ser
and its simple past conjugation is:
Yo fui
Tu fuiste
El/Ella fue
Nosotros fuimos
Ustedes fueron
Ellos/Ellas fueron
The question in Spanish is:
¿Tú fuiste médico?
The question in English is:
were you a doctor?
Answer:
The correct verb is:
b. ser
