Answer:
a. stevens hydroxyapatite combination is less than roger's
b. roger's skeleton underdoes less osteolysis than steven's.
c. roger's osteoblasts are more active than steven's.
Correct answer is d. all of the listed responses are correct
Explanation:
Roger has been lifting weights comparing to his twin brother Steven. Thus, all the given responses were related to compare both of their skeletons.
