Answer :
Final answer:
Combustible liquids have a flashpoint at or above 100 degrees Fahrenheit, equivalent to 37.8 degrees Celsius, making option (b) 50 degrees Celsius the closest correct answer.
Explanation:
Combustible liquids are defined by their flashpoint, which is the lowest temperature at which they can vaporize to form an ignitable mixture in air.
According to the information provided and standard classification systems, combustible liquids have a flashpoint at or above 100 degrees Fahrenheit (which is approximately 37.8 degrees Celsius).
This would correspond to option (b) 50 degrees Celsius if we are required to choose the closest given temperature in Celsius.
