Question

Justin and Kenneth have been best friends for as long as they can remember. Kenneth loves to run, but Justin hates to exercise. Recently, they both went for an annual checkup at the doctor, and they are comparing their blood test results. Based on the information you know, which of the following is most likely true?

Answer 1

Justin will have higher level of hemoglobin.

Step-by-step explanation:

Answer 2

Answer: Justin will have higher level of hemoglobin.

Explanation: athletes have an increased total mass of red blood cells and hemoglobin in circulation.