Answer the following question given this paragraph: 

Many mucous membranes are also covered with cilia. These are tiny, hair-like projections. Cilia move in waves and sweep mucus and trapped pathogens toward body openings. You can see this in the diagram in Figure below . When you clear your throat or blow your nose, you remove mucus and pathogens from your body.


Q: What are tiny, hair like projections?

 Choices:

- fuzz

- spinicles

- actin

- cilia

A:
cilia
