Question

Fill in the blank with a suitable preposition:
Thermostats make use _______ the principle of expansion.

• A. Up
• B. From
• C. Over
• D. Of

Answer 1

The correct option is D Of

The given sentence talks about thermostats.

Up and over are used to indicate position. We can thus eliminate options A and C as incorrect answers.

From indicates a starting point or origin,cause, separation or distance. As it does not bring out the meaning of the sentence, option B is also incorrect.

Of is used to indicate possession, relation, substance, cause or about. It fulfills the meaning of the sentence. Thus option D is the correct answer.