Which of the following is a characteristic of house dust mites?

House dust mites are microscopic organisms that are significant allergens for many people, making them particularly noteworthy in discussions about allergy management and pest control. One of the primary reasons choice C is considered correct is that house dust mites are indeed the most common source of indoor allergens in many regions, including homes. They thrive in environments where humans live, particularly in bedding, upholstered furniture, and carpets, due to the presence of skin flakes and moisture.

These mites do not prefer dry conditions; in fact, they thrive in humid environments where humidity levels are around 70-80%. While they are known to feed on organic material such as dead skin cells rather than human hair, their ability to contribute to allergic reactions is well-documented.

House dust mites are not aquatic organisms; they inhabit terrestrial environments, primarily found in the homes of humans, rather than living in water. This makes choice C the best representation of a core characteristic of house dust mites.