Match List I (activity) with List II (noise level in dB):

List I

i.Hearing

ii.Whispering

iii.Interference with sleep

iv.Normal talk

List II

a.30

b.1

c.60

d.30-50

Ai-a, ii-b, iii-c, iv-d ✓ Correct

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

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

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

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

Explanation

Hearing here is paired with a level of about thirty decibels.

Whispering is matched with the very low value of one decibel.

Interference with sleep is associated with around sixty decibels.

Normal conversation falls in the thirty to fifty decibel range.

The correct pairing links whispering to the faintest level and sleep disturbance to the loudest here.

Prolonged exposure above eighty-five decibels risks permanent hearing damage.

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