Select the most appropriate option to fill in the blank.
Everything Priyanka did in her academic _________ ended in vain.

Correct option is C

The correct option to fill in the blank is (c) attempts.
Explanation:
“Attempts” refers to efforts or tries made to achieve something. (प्रयास)
The phrase “academic attempts” is a common collocation used to describe efforts in studies.
Example: All his attempts to pass the entrance exam failed.
Meanings of other options and why they are incorrect:
· (a) adamants – very determined individuals (हठी व्यक्ति); not related to academic actions.
· (b) attends – verb form meaning to be present (उपस्थित होना); doesn’t fit the noun requirement.
· (d) attestations – official confirmations or declarations (प्रमाण पत्र); unrelated to general efforts or trials.