Identify the segment in the sentence which contains a grammatical error.
I knew that Aparna was speaking the truth and decided to stand besides her during the trial.

Correct option is D

Option (d) contains an error of preposition usage.
Correct phrase: stand beside her
Explanation:
· The word beside means next to or by the side of (बगल में), which is the intended meaning in this sentence.
· Besides with an “s” means in addition to or apart from (के अलावा), which is incorrect in this context.
· Grammatical rule used:
· Use beside when indicating physical position/location.
· Use besides when referring to addition.
· Example:
· Correct: She stood beside her friend during the award ceremony.
· Incorrect: She stood besides her friend during the award ceremony.
· Information booster:
· This is a commonly tested preposition pair in SSC exams – beside vs besides.