which question is the least biased?

a. do you think 10 year old boys should be allowed to play football even if they might sustain serious head injuries?

b. do you agree that karate is too dangerous for 5 year old boys?

c. do you think that 15 year olds should get jobs instead of being lazy?

d. do you think 12 year olds should be allowed to babysit younger siblings?

PLEASE HELP & THANK YOU !