Of animals reduces the level of circulating reproductive hormones leading to increased longevity, typically due to reduced cancer mortality.

Sterilization of animals reduces the level of circulating reproductive hormones leading to increased longevity, typically due to reduce cancer mortality. The primary aim of animal sterilization is avoiding overpopulation, but this increased longevity could be an added benefit for an individual animal.

Where is the rest of the question

The answer is a i believe