Final answer:
Disposable gloves are designed for a single use to prevent cross-contamination and maintain hygiene; hence, they should be worn only once.
Step-by-step explanation:
Disposable gloves are designed for single use and should be discarded after one use. This is to prevent cross-contamination and maintain hygiene. Therefore, the correct answer to the question is (B) 1. Using the provided reference as an analogy, if we consider gloves as reactants in a reaction, the limiting reactant determines the amount of product that can be formed. Similarly, for disposable gloves, the limiting factor is hygiene and safety, which allows only for a single use.