Fact 1: Cells are programmed to divide only a set number of times.

Fact 2: An egg cell divides into many cells.

Given the two facts above, answer the question "How many times does an egg cell perform division?" with the following options: 
- Summer
 - set number
 - It decreases
 - heat or cold
 - summer end
 - autumn
 - rapid expansion
 - during the day


 

  set number       