Fact 1: Humans have collected and grown mushrooms for food for thousands of years.

Fact 2: Mushrooms are also fungi.

Given the two facts above, answer the question "What have humans collected and grown as food for thousands of years?" with the following options: 
- sunlight
 - fungi
 - plants
 - rocks
 - fungus
 - salmon
 - ferns
 - poison


 

  fungi       