I think the flat hard surface is to ensure that the patients arm will not move when the needle is administered since it is usually critical that the needle is inserted in the correct vein which is only a fine target requiring careful positioning of the needle.
<span>The correct answer is C, because the healthy waist size for women (with a BMI of at least 25, common standard), is 35 inches. Laura's waist size is 39 inches, leading her to a higher risk of certain diseases.</span>
I think the answer is Alcohol