Select the most appropriate synonym of the bracketed word in the following sentence to fill in the blank.

The medical procedure was successful, but the patient experienced some minor ________(troubles) during recovery. 

Correct option is B

The word "troubles" in the context of medical recovery suggests difficulties or issues. The most appropriate synonym in this context is "complications," which refers to secondary problems that can arise during recovery. Therefore, the correct option is: (b) complications.
· Synonyms of "complications": difficulties, complications, problems, obstacles.
· Antonyms of "complications": eases, simplifications, resolutions, solutions.
Meanings of the other given words:
· Applications (a): The action of putting something into operation.
· Transformations (c): Thorough or dramatic changes in form or appearance.
· Obligations (d): Acts or courses of action to which a person is morally or legally bound; duties or commitments.