Fact 1: High temperatures can cause an object to combust.

Fact 2: Combustion generates toxic fumes.

Given the two facts above, answer the question "What can create toxic fumes?" with the following options: 
- cigarettes
 - High temperatures.
 - smoking tobacco
 - harmful substances
 - fossil fuels
 - chlorofluorocarbons
 - Pesticides
 - chemical reaction


 

  High temperatures.       