What is a common hygiene practice for all parts of the body?
a. shaving
b. regular cleaning
c. brushing
d. moisturizing

A common hygiene practice for all parts of the body is regular cleaning.

If you look up the definition of hygiene, it basically means keeping yourself clean. You most regular way to keep yourself clean is healthy is showering, which I suppose that is what they mean by 'regular cleaning'. Shaving is not necessary...brushing is not necessary (unless referring to teeth), and moisturizing is not necessary unless your skin is dry.