Aproperty of water that results from the cohesion of water molecules at the surface of a body of water and that creates a sort of skin on the water's surface is what

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products

c should be the answer