A biologist is studying two organisms, X and Y. She knows that at least one of them is an animal. Organism X only reproduces sexually. Organism Y reproduces both sexually and asexually.

Which conclusion is best supported by the information?

Organism X is an animal, and organism Y is not.
Organism Y has the benefit of not having to find a mate.
Organism X has offspring that are not genetically diverse.
Organism Y is a heterotroph, and organism X is not.