Work Step by Step
Her center of gravity must be exactly over the point that she touches on the floor so that the normal force and the gravitational force combine to produce no net torque. Only point B meets this criteria.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.