Detailed Instructions: 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:What is an example that ecosystems are an interconnected world? (A) animals' numbers decreasing when food decreases (B) animals' numbers increasing when predator numbers increase (C) animals' numbers increasing when plants decrease (D) animals' numbers decreasing when food increases
Solution:
A