Sensory adaptation us to focus our attention on stimuli.
a) familiar
b) subliminal
c) novel
d) intense

C) Novel

Explanation:

First of all sensory adaptation help us to be less sensitive to the ordinary things around us and things that happen around us. There are several types of stimuli that can capture our attention and change our regular sense instantly.

In case of  Sensory adaptation helps us to focus our attention on novel stimuli :

This sentence shows us how we will respond to the new thing that has suddenly happened. For example :

    "The rat came into the room while we watched TV peacefully".

We didn't expect the rat to enter the room. Because of sensory adaptation we are going to be surprised and our attention will be instantly focused to the new situation.

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