Fact 1: Afire requires oxygen to burn.

Fact 2: There is no "gaseous" oxygen on the Moon and the Moon itself is bone dry.

Given the two facts above, answer the question "Where is a fire least likely to start?" with the following options: 
- kalenchoes
 - a forest
 - a fireplace
 - soft soil
 - dormant
 - the Moon
 - a wood pile
 - rivers slow


 

      the Moon   