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: An example of replacing a natural resource like copper might be (A) recovering ores (B) running around (C) throwing up (D) using plastic straws

SOLUTION: A

PROBLEM: If you had a hammer, you would find ____ nails made of ____ (A) wood; wood (B) iron; wood (C) wood; iron (D) iron; iron

SOLUTION: D

PROBLEM: Which would a scavenger most likely eat? (A) a swimming fish (B) a nesting bird (C) run over deer (D) a skulking hyena

SOLUTION:
C