HELP ASAP (a p 3 x)

Which is an effect of
burning fossil fuels?

A. Natural gas forms underground

B. Oxygen gas is given off

C. Alkanes are converted to alkenes

D. Pollution is released into the atmosphere

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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.

I’m not sure about this question