Fact 1: Mating is generally preceded by courtship.

Fact 2: Friendship usually precedes courtship, and courtship, marriage.

Given the two facts above, answer the question "What often precedes mating?" with the following options: 
- A Greek letter
 - competition
 - friendship
 - birth of a child
 - death
 - Chemical energy
 - pregnancy
 - sweating


 

   friendship      