Which of the following is most like an intermediate in a metabolic pathway?
a. a tablespoon of nutmeg that will be used in a cake.
b. a pepperoni pizza coming out of the oven.
c. a person waiting in a line to buy tickets.
d. a carrot that has been peeled and is waiting to be cut.
e. a long on fire that has been half burned
f. a car up on jacks waiting to have its tired changed