Which of the Following Would Put You at Increased Risk

Which of the following would put you at increased risk of pathogens entering your body?

A) a mutation that increases the amount of lysozyme you can produce
B) a mutation that increases the amount of wax your ears produce on a daily basis
C) a mutation that causes your mucus secretions to be extremely watery
D) a mutation that decreases the number of cilia present in the respiratory tract