There are four segments labelled P, Q, R, and S. Rearrange the segments and choose from the options the logical order of them to construct a meaningful sentence. P. the scientists as dedicated as monks in a 14th century monastery Q. because the eyes were on the star R. whose lives were being fulfilled S. when I visited Rock-feller institute, I found

1. PSRQ
2. QPSR
3. SRQP
4. SPRQ