Estamos: we are
estas: you are
estan: they are
The question says where are Maria and Adela? You should change “Maria and Adela” to they, do the third option is correct.
Answer: 1. Thomas is <u>thinking </u>about visiting Spain
2. Vicenzo <u>understands </u> Italian.
3. Carmen has<u> breakfast at </u>the cafe
Explanation:
No, the solution is -3,-2,....,0,1,...
The answer is A, seras since you needed to conjugate it for the noun tu