Match List I (Pollution source) with List II (Category) and choose the correct answer from the options given below.

List I

i.Sewage

ii.Agricultural fertilizers

iii.Land erosion

iv.Power plants

List II

a.Thermal pollution

b.Sediments

c.Oxygen-demanding waste

d.Plant nutrients

Ai-c, ii-d, iii-a, iv-b

Bi-c, ii-d, iii-b, iv-a ✓ Correct

Ci-b, ii-a, iii-c, iv-d

Di-b, ii-a, iii-d, iv-c

Correct answer: (B) i-c, ii-d, iii-b, iv-a

Explanation

Sewage adds oxygen-demanding waste, whose decomposition consumes dissolved oxygen.

Agricultural fertilizers wash in as plant nutrients that cause nutrient enrichment.

Land erosion delivers sediments that cloud and silt up water bodies.

Power plants discharge warm water, causing thermal pollution.

These pairings match each source to the pollution category it produces.

Nutrient runoff from fertilizers is a leading cause of eutrophication.

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