Final answer:
Scalping refers to cutting grass too short during mowing, and repeated scalpings can decrease plant carbohydrate reserves.
Step-by-step explanation:
Scalping refers to the practice of cutting grass too short during mowing, which can have negative effects on the health and appearance of the grass. Repeated scalpings can result in a decrease in the plant's carbohydrate reserves, as it is unable to store enough energy. This can weaken the grass and make it more susceptible to damage and disease.
Therefore, the correct option is e) Repeated scalpings decrease plant carbohydrate reserves.