Fact 1: An animal needs to attract a mate to reproduce.

Fact 2: Mammals are animals which raise their young on milk and typically give birth to live young.

Given the two facts above, answer the question "What needs to attract a mate in order to give birth to live young?" with the following options: 
- humans
 - Jellyfish
 - mammals
 - Frogs
 - birds
 - hormones
 - insects
 - reptiles


 

   mammals      