Mason is an executive at a packaging services company. He attends a briefing for employees led by his department’s supervisor. Which TWO statements show that Mason understands the proper etiquette for in-person meetings?

He makes a joke about the speaker’s appearance.
He pays full attention to the speaker and occasionally nods.
He frowns and disagrees with a point that the speaker makes.
He responds to a call on his cell phone when it rings.
He arrives at the meeting five minutes early.