Having extra things to help you present can help you be more confident. They also makes you less nervous because you have more than just the presentation itself to relay on.
I think the answer is the third
statement. Winterbourne is a judgemental. He judge the people around him, like
the person can’t dance or something. He judges Daisy for her private
conversation with Giovanelli. He is slow at things and most of the time he procrastinate.