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 are independent variables in this study?

1 : a colorless flammable liquid that in one form is the substance in liquors (as beer, wine, or whiskey) that can make a person drunk. 2 : a drink containing alcohol.

1) d

2)c

3)b

4) a

5)c

6) c

the consumer demand because the members have to be aware if people are going to buy what they want to sell in this case either energy drinks or a car wash.