Answer:
She could have looked at her note cards only occasionally.
Step-by-step explanation:
This is the statement that best describes a way in which an oral presentation can be improved. If we are presenting something orally, it is acceptable to use note cards in order to help us remember some piece of information or guide us through the presentation. However, these cards should only be consulted occasionally. If a speaker looks at these constantly, it can make him or her look unprepared.