What should the resident's knees be raised during the procedure?

Raising the resident's knees during the procedure is primarily intended to enhance comfort and ease of insertion. This position can help facilitate access to the area being treated, allowing for a smoother and more efficient process. By positioning the knees in a raised manner, the healthcare provider can also promote relaxation of the muscles, which can reduce tension and discomfort for the resident. This comfort is crucial, especially in procedures that may require precision and continuity of care.

The other options do not align with the primary objective of raising the knees in this context. While ensuring visibility, maintaining balance, and preventing medication flow are important aspects of various healthcare procedures, they are not the primary reasons for positioning the knees in this manner during the specific procedure being referenced.