Cuando llegaba de la escuela y no había nadie en mi casa, iba a casa a. la vecina b. los bloques c. la tortuga d. el mundo

For this case we can translate the sentence as:

When I arrived from school and there was no one in my house, I went to the home of .

We must complete the prayer. The options we have are:

It is observed that the option that best adapts is option A.

When I arrived from school and there was no one in my house, I went to the neighbor's house.

Cuando llegaba de la escuela y no había nadie en mi casa, iba a casa de la vecina.