Fact 1: An egg requires warmth to survive.

Fact 2: Eggs, the female sex cells, are produced in ovules, which are inside the ovary.

Given the two facts above, answer the question "What requires warmth to survive?" with the following options: 
- opossums
 - vacuum
 - minerals
 - single-celled organisms
 - bullfrogs
 - female sex cells
 - dolphins
 - female connectors


 

      female sex cells   