Each cube represents a cell. Which cell would probably have the easier time moving materials into and out of itself quickly enough to survive?

Hello. You did not present the cubes to which the question refers, which makes it impossible for me to be able to answer your question exactly, but I will try to help you in the best possible way.

The cell that will have the easiest movement of materials in and out of itself is the cell with the smallest size. This is because, smaller cells have a proportional surface area and volume. This helps in absorbing everything the cell needs, with impressive speed, as well as facilitating the removal of substances harmful to the cell.

it's c. (to reduce the greenhouse effect/carbon gasses)

bradykinin is a physiologically and pharmacologically active peptide of the kinin group of proteins, consisting of nine amino acids.