Question #6432567Single Choice

Biology

Question

Oliver has a cold and notices that his nose is producing a lot of mucus. How does this help his body fight the infection?

Mucus traps pathogens and prevents them from entering deeper into the respiratory system.

Mucus is a waste product with no role in immune defense.

Mucus blocks all bacteria and viruses from entering the body.

Mucus only forms in response to bacterial infections, not viral infections.

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