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: Thick feathers can be used for (A) climbing, cracking nuts and peeling fruit skins. (B) courtship and looking for food (C) killing prey, preening and feeding young (D) staying weatherproof, flexible and free of bacteria

SOLUTION: D

PROBLEM: Deep sea animals like giant squid live (A) black inky ocean (B) in water sources (C) in liquid places (D) bottom of rivers

SOLUTION:
A