Find the part of the given sentence that has an error in it. If there is no error, choose ‘No error’.
The harmful results of fragmentation are worsened by increased (1)/ acidity, over-fertilization and drought, as these cause a further (2)/ deteriorate in the quality of the habitat remain. (3)/ No Error (4)

Correct option is C

The error lies in option (c).

Explanation:

• After the phrase cause a further, we need a noun to name the effect/result.
• Deteriorate is a verb, so it is incorrect here. The correct noun form is deterioration.
• The word remain is also incorrect/ill-placed and makes the sentence ungrammatical. The sentence should end after “habitat” (or be restructured), not add “remain”.

Correct sentence (one correct form):

• ...as these cause a further deterioration in the quality of the habitat.

Grammatical rule (English):

• After articles and adjectives like “a further”, a noun is required (deterioration), not a verb (deteriorate).

व्याकरण नियम (Hindi):

• “a further” के बाद संज्ञा आती है; इसलिए deteriorate (क्रिया) नहीं, deterioration (संज्ञा) होगा।

So the correct answer is (c)