Final answer:
The effectiveness of waxed floss, unwaxed floss, and dental tape is generally comparable, so none are considered better than the others; it ultimately depends on personal preference and specific dental needs.
Step-by-step explanation:
The type of dental floss that works best depends on the individual's teeth and preference. Some people prefer waxed floss because it can slide between teeth more easily, especially if teeth are very tightly spaced. Unwaxed floss tends to make a squeaking sound when the teeth are clean, which some find satisfying as a sign of effectiveness. Dental tape is broader and flatter than standard floss and can be more comfortable for people with sensitive gums. However, studies show that the effectiveness of waxed, unwaxed floss, and dental tape is generally comparable, so E. None of the above works better than another is a correct answer as well.