Tension allows a tightrope walker to walk across the rope
The tightrope walker try to balance on the rope by aligning center of mass and center of gravity . Hence , there is no use of air resistance , friction and magnetic force in balancing of the tightrope walker .
Correct option will be
Tension because tension will balance out the weight force
To learn more about Magnetic force here :
https://brainly.com/question/3160109
#SPJ4