Fact 1: Increasing heat causes thermal expansion.

Fact 2: Gaskets and thermal expansion increase the misalignment problem.

Given the two facts above, answer the question "Misalignment problems in gaskets can be increased by:" with the following options: 
- mechanic
 - storms
 - wind
 - replacement
 - force
 - heat
 - sweat
 - cracks


 

      heat   