makes the food hot enough to burn adds more oxygen needed for burning increases the amount of wood there is to burn provides the energy needed to keep the fire going
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Fanning can make a wood fire burn hotter because the fanning
Possibilities:
- makes the food hot enough to burn
- adds more oxygen needed for burning
- increases the amount of wood there is to burn
- provides the energy needed to keep the fire going

adds more oxygen needed for burning