Mengapakah jalur dwilogam membengkok apabila dipanaskan?

Read this sentence. although the idea was foreign to me, i still thought i would give it a try.

Apko pata hai ka kistra poti karta hai? plz muja patao

Which sentence is punctuated correctly? a) the moon which often shines too brightly in my window is full tonight. b) my new textbook which costs over thirty dollars is the best one i've ever read. c) mr. smith, who is a well-respected lawyer, has just retired from active practice. d) the play by velma winterbaker, that was published last year, ended up winning the pulitzer prize. '