The answer is C because its asking how much are the books, the one you answered was incorrect because if you translate it you said “how many” instead of “how much”
answer:¿Dudáis que el pollo asado de ese restaurante sea de buena calidad?
B. inccorecto
its supposed to say
" sabes donde estan mi llaves ? "
Answer:
c. it began as the palace library of Prince Philip V.