The first two words are related in a particular manner. Select the word from given choices, which is related to the third one in the same manner:
light : blind :: speech :

The word 'light' means something that makes vision possible.
The word 'blind' means sightless or visionless.
Therefore, we can say that the words "light and blind" are opposite to each other.

The word 'speech' means the expression of or the ability to express thoughts and feelings by articulate sounds.
The word 'dumb' means temporarily unable or unwilling to speak.
Therefore, we can say that the words "speech and dumb" are opposite to each other.