You are presented with the question "What can have a negative impact on the sinuses in a body?" and the following answer choices: 
- mold spores
 - A virus
 - humid air
 - warm water
 - warm air
 - Pesticides
 - viruses
 - disease

Now knowing that amold spore has a negative impact on the respiratory system and sinusitis Sinuses are a part of the upper respiratory system, choose the best answer.


 

 mold spores        