Pumice is used for cleaning foot. Foot are wet with warm water and then scrub by pumice so that hard and dry skin can be removed. It is quite effective in cleaning skin.
Pumice is also used as light weight material in concrete mix. Due to it porous texture, it is a good light weight material.
I think b is the right one
Answer:
D...............................
The match
you need to light the match before you can light anything else.
and after the match is lit, maybe light the oil lamp first
