Final answer:
The correct temperature for performing a flashpoint analysis is 25 degrees Celsius.
Step-by-step explanation:
The correct temperature for performing a flashpoint analysis is C) 25 degrees Celsius.
Flashpoint analysis is a test used to determine the lowest temperature at which a substance can vaporize to form an ignitable mixture in air. It is important to ensure that both the sample and the test cup are at the same temperature to obtain accurate results.