Fact 1: An egg requires warmth to survive.

Fact 2: Sunlight and warmth are vital to the incubation of eggs and a successful hatch of fry.

Given the two facts above, answer the question "What does an incubator help an egg to do?" with the following options: 
- support
 - eat
 - motility
 - expand
 - reproduce
 - growth
 - survive
 - die


 

       survive  