Pls I neeed help! Someone answer these questions!

Which of these sentences exhibits proper usage? a. many doctors affiliated with university hospital expressed concern about the policy (moore 5). b. many doctors affiliated with university hospital expressed concern about the policy (moore 5). c. many doctors affiliated with university hospital expressed concern about the policy (moore 5). d. many doctors affiliated with university hospital expressed concern about the policy (moore 5).

Which is not among the style choices a writer would use, if he or she is trying to establish a formal writing style/

Acomplex sentence contains . one subject and one verb