Passage Summary: There are only so many ways to build a tool for a job, like wings for flying. Since most animals have the same basic needs, it makes sense that different species would end up developing similar body parts to solve the same problems.

Reasoning: Certain body structures are the only way to perform specific tasks, leading unrelated species to evolve them independently to meet similar needs.

Analysis: This is a 'Complete the Argument' task, so we need a conclusion that flows naturally from the idea of convergent evolution. The stimulus establishes that physical constraints dictate how certain tasks are accomplished and that animals share fundamental needs. Therefore, you should look for an answer that predicts these animals will face similar evolutionary pressures and likely develop similar physical solutions or structures.