2. Identify the following statements as describing either an exothermic oran endothermic reaction. a. More energy is released than is used by the reaction.
b. The chemical reaction involved in burning wood
c. Less energy is released than is used by the reaction.
d. Photosynthesis

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

c-14 is carbon-14, or radiocarbon.   it is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.