You are presented with the question "What can be startling?" and the following answer choices: 
- firecrackers
 - an image
 - Saltine crackers
 - Wheat crackers
 - an object
 - sea urchins
 - sameness
 - hypothyroidism

Now knowing that afirecracker converts chemical energy into sound and most any other sounds can be frightening or startling, choose the best answer.


 

 firecrackers        