You are presented with the quiz "A what is used for seeing in the dark?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "alight bulb is used for seeing in the dark" and "an electric light bulb is a light source". So, what's the best answer to the question?
Select from the following.
(I) darkness source.
(II) our nearest star.
(III) light source.
(IV) shade source.
(V) energy barrier.
(VI) energy.
(VII) photons.
(VIII) blackout curtain.
Answer:
(III)