Answer:
A. The principles of good communication
Step-by-step explanation:
The main aspect of a good presentation is the assertive and efficient communication that can catch the attention of the audience. For this you can prepare yourself through communication training to explore all the principles of good communication. Also, it is good that you study the subject, because with your success in communication, the audience tends to be interested in the subject and will probably have questions to ask you. This is great as it can stimulate brainstorming and add knowledge to everyone.