In these questions, the 1st and The last sentence of the passage are numbered 1 and 6. The rest of the passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentences and find out which of the four combinations is correct.
1. These positive effects vary from genetic changes that
P. to other related infections,
Q. make us more resistant to the diseases responsible
R. for epidemics and
S. which have effects on human that are
6. hard to pin down and quantify.

Options

A. RPQS
B. QRPS
C. SQPR
D. PRSQ

Answer

B

Explanation

QRPS