Identify the part which contains an error.
Beside being fined, / the erring student / was also expelled / from the school.

Correct option is A

Error part: (a) Beside being fined
Correct form: Besides being fined
Detailed explanation (in detail):
• Beside (without ‘s’) means next to / by the side of. (Hindi: के पास / बगल में)
– Example: He sat beside me.
• Besides (with ‘s’) means in addition to / apart from. (Hindi: के अतिरिक्त / इसके अलावा)
– Example: Besides being fined, he was also expelled.
• In this sentence, the meaning required is “in addition to being fined”, so Besides is correct, not Beside.
Correct sentence: Besides being fined, the erring student was also expelled from the school.
Grammatical rule (English):
• Besides + noun/verb-ing = “in addition to”.
• Beside = “next to” (place relation).
व्याकरणिक नियम (Hindi):
• Besides = के अतिरिक्त/इसके अलावा (addition) और Beside = के पास/बगल में (स्थान) होता है।
Meanings of other parts (to confirm they are correct):
• (b) erring student → a student who has done something wrong (Hindi: गलती करने वाला विद्यार्थी)
• (c) was also expelled → was removed officially (Hindi: निकाला गया)
• (d) from the school → correct preposition for “expel from”. (Hindi: विद्यालय से)
Hence, option (a) is the correct answer.