Which of the Following Is the Best Example of Good

Which of the following is the best example of good behaviours at a meeting?

A) interrupting to make good points and helping the chair deal with issues
B) waiting to share ideas before adjournment and multitasking
C) having read the agenda and maintaining focus on dealing with issues
D) challenging all ideas on the table and doing one's homework
E) criticizing members and their ideas and focusing on the work to be done