Which property of air allows us to see each other?

Question 6

(a) ______ is the property of a material that enables us to see things through it.

(b) Which type of object allows us to see things clearly through it. Give an example.

(c) Define a translucent object.

(d) Name a material that is opaque but it can be made translucent by rubbing it with a little amount of oil.