The cytoplasmic extensions that, together with the cell body, provide the main receptive surfaces for neurons are:. a. dendrite.
b. axon.
c. cell body.
d. neuroglia.

Dendrite

Explanation:

Dendrite with cell body are cytoplasmic projections that are present at the begin of neurons and help increase the cell body surface area through their extensions. The cytoplasm of dendrites and that of cell body have the same number of neurons. Dendrite receive electrical impulses from neurons and send those information to the sons.

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme

answer; i believe the correct answer is (data); /// good luck