Questions 4 to 6 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions. Now, listen to the conversation.
What are the speakers mainly discussing

A．Chewing gum during the presentation.
B．Making eye contact during the presentation.
C．Using an assessment form during the presentation.
D．Summarizing the main ideas during the presentation.

A．By referring to the handbook for the procedure.
B．By quoting what the professor had said about it.
C．By giving examples of her procedures.
D．By comparing it to the old procedur