In the following questions, the first and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/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 sentence (s) and find out which of the four combinations is correct. Then find the correct answer.

1. Researchers say that jogging alone is unhealthy.
P. It was found that communal joggers have double the number of brain cells as solo runners.
Q. These positive effects are suppressed when running occurs in isolation.
R. Experiments indicated that running alone stifles brain cell regeneration.
S. Experienced in a group, running stimulates brain cell growth.
6. However, joggers around the world should remember that jogging is healthier than the rat race.

• PQSR

• RPSQ

• RQPS

• RQPS