3. Two liquids are being studied to find which one evaporates more quickly. Liquid A boils at 50°C and
Liquid B boils at 25°C. Which liquid do you think
evaporates faster?
A. Liquid A
B. Liquid B
C. Both will evaporate at the same rate
D. Neither evaporate at all

Combustion is the act or process of burning. therefore, i believe the answer is  a: burning wood. 

Answerδh > 0explanationc₆h₆  (s)  → c₆h₆ (l)if you are changing it from a solid to a liquid, you are pretty much melting the solid. this requires heat energy. therefore, the reaction is endothermic (takes in energy); the system enthalpy increases as the reaction proceeds: δh > 0.