Fact 1: Competition may lead to aggressive behaviors or displays of aggression.

Fact 2: Many sports are solely competition sports.

Given the two facts above, answer the question "what may lead to aggressive behaviors?" with the following options: 
- respiration
 - Gunshots
 - tortoises
 - digestion
 - sports
 - gravity
 - vehicles
 - abrasion


 

     sports    