In the following question, you are required to fill in the blank by choosing the word that best completes the sentence.
If Marina doesn’t speed up in the final lap, she will surely ________ the race to her strongest rival.

Correct option is A

The correct option to fill in the blank is (a) lose.
Explanation:
After the modal verb will, we always use the base form (V₁) of the verb. The verb lose means to fail to win or to be deprived of something. (हार जाना, खो देना)
The sentence expresses a future possibility; therefore, lose is the correct choice.
Lose: To fail to win or to be deprived of possession. (हारना, खोना)
Example:
· If you don't study, you will lose marks.
· India may lose the match if the batting collapses.
Why other options are incorrect:
· (b) loose: Means not tight or free. (ढीला) It is an adjective, not a verb.
· (c) lost: Past tense and past participle of lose; cannot follow will.
· (d) losing: Present participle; cannot be used after will.
Information Booster:
After modal verbs (can, could, may, might, shall, should, will, would, must), always use the base form (V₁).
Examples:
· She will go tomorrow.
· You must study regularly.
· We can help you.