A sentence has been given with a blank to be filled with an appropriate word. Choose the correct alternative.
His heart pounded as he checked his rearview mirror and saw only the dark _______ of highway.

Correct option is B

The correct option to fill in the blank is (b) stretch.
Explanation:
"Stretch" refers to a continuous area of land or water — fitting the context of a long dark highway. (खिंचाव / फैला हुआ भाग)
Example:
We drove along a lonely stretch of road.
Why other options are incorrect:
· (a) Trench: A deep ditch (खाई) – irrelevant for a highway.
· (c) Vitality: Energy and liveliness (जीवंतता) – does not fit physically.
· (d) Emancipation: Freedom from restrictions (मुक्ति) – abstract, illogical for a highway.