The answer is: B. Lose 10 pounds in three months.
BMI is calculated with this formula:
This mean that for a 1. 65 meter (5'5'') tall student to obtain a BMI of 28, the weight must be
weight = BMI x 1.65^2
weight = 28 x 2.7225
weight = 76.23 kilograms.
Normal BMI range is 18 - 25
To reach a BMI of 25, the student's weight must be
'weight = 25 x 1.65^2
weight = 68 kilograms
Total weight that the student need to lose
= 76.23 kg - 68 kg
= 8.23 kg or 18.14 pound
Healthy amount of weight to lose is around 1 pounds per week. So, the student need around 18 weeks to lose all the weight.
Because of this, losing 10 pound in three months (12 weeks) is a good benchmark since it provide realistic timing and expectation for the student.