The following sentences form a paragraph. The sentences are numbered as P, Q, R, S and T. These five parts are not given in proper order. Read the sentences and choose the alternative that arranges them in correct order.

P. While environmental assessments of new roads focus on the danger of habitat fragmentation, or bats colliding with traffic

Q. Ultrasonic sounds from vehicles were found to impede some bat species’ high-frequency echo-location calls

R. The thunder of road traffic is likely to drive away bats, according to a study

S. The first ever controlled field experiment to investigate the impact of vehicle noise suggests noise pollution could be highly damaging

T. Which found vehicle noise caused a bat’s activity to decrease by two-thirds