You have your answer right.
Where a mask
use hand sanitizer before and after
dont touch anyone
social distancing
stay inside if sick
XDXDXD
Answer: You mean Frequency? Frequency, in physics, the number of waves that pass a fixed point in unit time; also, the number of cycles or vibrations undergone during one unit of time by a body in periodic motion.
Explanation:
Pike and finger nail covered with protection
