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 compass uses iron to locate the northern (A) latitude (B) axis (C) shoreline (D) hemisphere
[EX A]: B

[EX Q]: A person wants their yard to be a wonderful ecosystem for local wildlife. They consider doing a few things in order to facilitate this, but ultimately decide that the best way to make a great impact is to (A) make some more money (B) plant a wet rope (C) plant a blue spruce (D) sing to their flowers
[EX A]: C

[EX Q]: A weed will only live in the (A) dirt (B) air (C) sink (D) house
[EX A]:
A