In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").

[EX Q]: A needle lined with magnets will pull north. If north is to the right and you want to go west, you'd walk (A) straight (B) left (C) backwards (D) right
[EX A]: A

[EX Q]: Which most likely requires the aid of specialized tissues at the ends of stems? (A) human assisted space travel (B) the quick growth of bamboo (C) cats digging with their claws (D) the slow growth of mammals
[EX A]: B

[EX Q]: Which object is likely to be a thermal conductor? (A) curtain (B) wall (C) table (D) mirror
[EX A]:
D