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Living in a microgravity (low gravity) environment makes an astronaut’s daily grooming routine an interesting experience. Each crewmember has a personal hygiene kit that attaches to a stable surface to prevent it from floating away. Inside the kit is everything he or she needs to keep clean. Because water is a precious commodity in space, astronauts clean their hair with a rinseless shampoo—a product originally designed for hospital patients who couldn’t take showers. The station has no shower or bath facilities, so crewmembers use sponges to clean up in the morning.
In this passage, the word commodity means
A) ideal.
B) model.
C) product.
D) utensil.