Answer:
The right answer is, B. He viajado.
* - ¿Has viajado por Ecuador?
- Sí, he viajado por Ecuador y el Perú también.
Step-by-step explanation:
Because the question must be answered in the first person singular, therefore the answer that correctly describes the way it is done is B. Since a question is asked in this case addressed to us as readers, so it must be resolved by ourselves taking into account the indications indicated above.