Void means that something has no legal force. In other words is is not able to be used. For example, a void check. With a void check you cannot legal take money.
Your answer is A. Science Fiction
A. Best the reason why it is not better (even though it sounds right) is because it says "out of the five cousins" there for we are comparing ben to five other people and he is the best.
D. A Medieval Ruin.
Hope this helped :)
p.s. i need one more brainliest to rank up ;)