A Research Study Is Planned to Determine the Effect of Nutritional

A research study is planned to determine the effect of nutritional supplementation and type of support surface on the rate of wound healing in sacral myocutaneous flap failures.Which is an independent variable in this study?

A) Rate of wound healing
B) Sacral myocutaneous flap
C) Retailer source of protein supplement
D) Type of support surface
E) Nutritional supplementation

Correct Answer:

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