What is an advantage in fertilizing eggs outside the female's body?

Fertilizing eggs outside the female's body, a process known as external fertilization, allows for a higher number of eggs to be fertilized simultaneously, increasing the chances of successful reproduction. This method also provides a controlled environment where conditions such as temperature and pH can be optimized for embryo development. Additionally, it can reduce the risk of predation on fertilized eggs and allow for easier monitoring and intervention if necessary.