Final answer:
Sharon has a high percentage of body fat, as it is measured at 30%, which is at the higher end of the optimal fat content range for females.
Step-by-step explanation:
The question is regarding Sharon's body fat percentage, which has been measured at 30%. According to the optimal fat content guidelines, for a female, this is at the higher end of the optimal range, which is between 20 and 30 percent for health and reproductive reasons. Therefore, the correct statement about Sharon is that she has a high percentage of body fat. This is not indicative of muscle mass, which can be denser and weigh more than fat. It's important to note that BMI as a measurement tool has limitations, as it does not account for fat mass or distribution within the body, and could be misleading when assessing individuals with high muscle mass or those with conditions like osteoporosis.