Choose the correct alternative which will improve the part of the sentence given in quotes.
Chandra's good gestures "will highly appreciated".

Correct option is C

The correct substitution of the quoted words is "will be highly appreciated".
Explanation: The phrase "will highly appreciated" lacks the auxiliary verb "be," necessary for forming the passive future tense. "Will be highly appreciated" correctly uses the future passive voice to indicate that the gestures will receive appreciation.
Grammatical rule used: Future passive constructions use "will be" followed by a past participle to describe actions that will be completed in the future.
Example: Your efforts will be highly appreciated by the team.