What are the four factors that determine the prognosis for having a child after Fertility Preservation?

The woman’s age at the time of egg freezing.
The number of eggs cryopreserved. It is recommended to cryopreserve 10-15 mature eggs to ensure a good safety level regarding the possibility of having a child.
The quality of the eggs. Quality is affected by genetic factors as well as environmental ones, such as lifestyle, diet, body weight, and exposure to chemicals.
The quality of the sperm that will eventually be used to fertilize the eggs after thawing.