The town follows a tradition that kills someone once a year. Everyone agrees that the tradition must be followed, simply because it's a tradition, that is until they themselves are chosen to die. The townspeople do not want to die, but they are unwilling to break from tradition.
A complex sentence contains a subordinate clause ( or a sentence starting with a conjuction) So the answer is B.<span>.After Maria finished dinner, she washed the dishes in the sink. Because of the subordinate clause ( Afer Maria finished dinner ) The others are simple sentences. ( A.simple sentence and C-D are compound sentences)</span>
It can be considered as Greek mythology.