Which Hypothesis Posits That Asthma and Allergies Have Increased Because

Multiple Choice

Which hypothesis posits that asthma and allergies have increased because our environment has become cleaner, thus lowering our exposure to germs and, as a result, our immune system is less able to differentiate between harmful substances and less harmful irritants?

A) Immunosuppressant hypothesis
B) Reactionary hypothesis
C) Hygiene hypothesis
D) Irritant hypothesis