Which of the following would most likely be found in a wide valley

Nothing

Explanation:

No options found and you asked us to pick from the following

it is either c or d and i know for sure it is not a or b

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