Directions: The question contains a sentence/sentences/part thereof followed by five choices. Select from these choices the one which most logically completes the idea contained in the given sentence or part. There is hydrogen and there is oxygen, and there is chloride of sodium, and the dark blue colour is nothing but the reflection of billions of ether vibrations. But have I really to choose between two statements concerning the waves, one of which is valuable and the other not?
Reveal answer
Fill a bubble to check yourself