Direction: The question below consists of a sentence, the parts of which have been jumbled. These parts have labelled P, Q, R, and S. You are required to re-arrange the jumbled parts of the sentence and mark your response accordingly.

after inhaling highly polluted air (P)/ easy with PM 2.5 (fine, respirable particles) levels (Q)/ remaining within the safe limits (R)/ for months, Delhiites seem to be breathing (S)/