Question

A team b player may use locked hands to ward off an opponent who is blocking him or attempting to block him.

Answer 1

The rule stated above is "False".

This is one of the blocking rules described, a team B player cannot use locked hands to ward off an opponent who is blocking him or attempting to block him. It is against the rules of the game and will be considered not legal if someone make use-of-hands foul if the runner grasps a teammate.