TASK DEFINITION: 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").
PROBLEM: A source of heat may come from (A) a cold shower (B) holding hands (C) holding ice (D) Antartica

SOLUTION: B

PROBLEM: An electron microscope can (A) move small magnets around (B) create completed replicas of animals (C) burn plastic with ease (D) recreate an entire image

SOLUTION: D

PROBLEM: A thing which may be found at a special location for reusing materials is a (A) fresh cat litter (B) new brick house (C) rusted aluminum tray (D) old used wax

SOLUTION:
C