Which one of the following conditions are major factors associated with low back pain

a. height and weight
b. age and physical condition
c. race and ethnicity
d. gender and flexibility

And the 1 points are for this 20 if i get all 3 of them correctly i will give you brainliest and if you only get all 3 i will give you brainliest including a and the rating will be 5 and if you get those i will give you 20 points