Question

C. mi

5
.
motocicletas son grandes.
a.
Nuestro
b. Nuestras
nuestros​

Answer 1

NuestrAs motocicletas son grandes. Motocicletas is feminine.

Answer 2

Nuestros motocicletas son grandes. This makes the most sense, and means that, nuestros will be the best answer.

Hope this helps

(☆ω☆)