The correct answer is D. orderliness.

Explanation:
"Symmetry" refers to a balanced and orderly arrangement, especially when parts are proportionally or harmoniously arranged. In this context, it suggests that the presentation has an organized, well-structured, and balanced quality.

- A. confusion: This means lack of clarity or understanding, which is the opposite of "symmetry."
- B. hesitation: This refers to a pause or uncertainty, which does not match the meaning of "symmetry."
- C. excitement: This refers to a feeling of enthusiasm or eagerness, which is unrelated to the idea of symmetry.
- D. orderliness: This is correct. "Symmetry" often implies balance and order, making "orderliness" the most appropriate choice.
- E. dissatisfaction: This refers to a lack of contentment, which is not related to the concept of symmetry.

Therefore, D. orderliness best conveys the meaning of "symmetry" in this context.