Burning a log is an example of a. an endothermic reaction b. a solution. c. a catalyst. d. an exothermic reaction

A burning log is an example of D. An Exothermic Reaction

An exothermic reaction is defined as a reaction that release energy into the surrounding air, also causing the mixture that's reacting and its surroundings to become warmer.

Ii hope that helps u out!

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be

idk what the question is about