You are presented with the question "what can cause a tooth to swell?" and the following answer choices: 
- virus
 - hormones
 - smoking
 - sugar
 - germs
 - acid
 - bacteria
 - abcess

Now knowing that infection can cause bodily tissues to swell and an abscess or swelling is caused by an infection in the tooth or gum, choose the best answer.


 

        abcess 