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: If something is in an ecosystem, it could be (A) invisible (B) vacuum of space (C) lacking life (D) alien

SOLUTION: C

PROBLEM: A squirrel likely (A) stores food for the summer (B) stores food for upcoming harsh conditions (C) has little need to store food (D) stores food for the spring

SOLUTION: B

PROBLEM: Dormant cane toads emerges from mud to ended their (A) long slumber (B) day (C) life (D) meeting

SOLUTION:
A