Fact 1: Scraping oneself on a contaminated object may cause infection.

Fact 2: An abscess is an infected area swollen with pus.

Given the two facts above, answer the question "scraping oneself on a contaminated object may cause what?" with the following options: 
- an area wet with medicine
 - a pill for health
 - cause their death
 - an area clean from bacteria
 - fissures of hot, acidic water
 - an area swollen with pus
 - contamination
 - harmful substances


 

      an area swollen with pus   