Which of the following is an example of semantic noise? a. listening to gangster rap music for the first time b. not being able to see the blackboard from the back of the class c. getting advice from a disreputable source d. staying at a hostile environment

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. '