I disagree. Carbon is not a group 18 element. This is incorrect because elements closer to the top of the group are less reactive than those at the bottom of the group. Group 18 elements are noble gases and carbon, a group 14 element, is a non metal.
The answer would be :
It is a plant cell because starch is the energy storing molecule in plant cells.
Hope this helps !
Photon
It is a reaction between an element and a compound that results in a different element and compound
For the Colorado river to carve the Grand Canyon It must uplift the Colorado Palteau