Select the correct option:
The curator opted ___________ displaying the artifact due to preservation concerns.

Correct option is A

The correct option to fill in the blank is (a) against.
Explanation of correct answer: The verb “opt” commonly takes the preposition against when we mean to decide not to do something. Here, due to preservation concerns, the curator decided not to display the artifact, so opted against displaying is correct. (Hindi meaning of “opt against”: के विरुद्ध निर्णय लेना / न करने का फैसला करना)
Example: They opted against buying the house because repairs were too costly.
Explain why other options are incorrect:
• (b) for: would mean the curator decided to display, which contradicts “preservation concerns.”
• (c) on: “opted on” is not the standard collocation here.
• (d) with: “opted with” is incorrect usage in this context.