Parts of the given sentence have been underlined. One of them contains an error. Select the option that correctly rectifies the error.
At present, only 60 percent of the 200 million gallons of the city's sewage receives any kind of treatment before it is dumped into the river, who supplies water not only to this city but to innumerable towns and villages downstream.
Answer और ExplanationAnswer and explanation
Answer: (B) which supplies
Concept (Relative Pronoun: Who बनाम Which): 'River' एक वस्तु है, इसलिए उसके लिए Relative Pronoun 'which' आता है, 'who' नहीं। 'Who' केवल व्यक्तियों के लिए प्रयुक्त होता है।
अतः 'who supplies' के स्थान पर 'which supplies' होगा।
✓ Correct sentence: ... into the river, which supplies water not only to this city but to innumerable towns and villages downstream.
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ध्यान दें: 'its' एक Possessive Determiner (स्वामित्वबोधक निर्धारक) है (जैसे its colour), जबकि 'it is' का संक्षिप्त रूप 'it's' होता है। यहाँ Passive 'it is dumped' सही है, इसलिए 'its dumped' अशुद्ध है।
Exam trap: 'river' के लिए भी 'who' को सामान्य Relative मान लेना।
Concept (Relative Pronoun: Who versus Which): 'River' is a thing, so the relative pronoun is 'which', not 'who'. 'Who' is used only for persons.
So 'who supplies' should become 'which supplies'.
✓ Correct sentence: ... into the river, which supplies water not only to this city but to innumerable towns and villages downstream.
!
Note: 'its' is a possessive determiner (as in its colour), and it is the contraction 'it's' that means 'it is'. Here the passive 'it is dumped' is correct, so 'its dumped' is an incorrect form.
Exam trap: treating 'who' as a general relative pronoun even for a river.
Source: DSSSB ASO 2026 · 25 Sep 2026 · Shift I। Solution: Prashant Sir, Ramban।Source: DSSSB ASO 2026 · 25 Sep 2026 · Shift I. Solution by Prashant Sir, from Ramban.