Answer:
b. could be held liable under a theory of negligent failure to supervise.
Explanation:
In this example, Radical Boards, Inc. could be held liable under a theory of negligent failure to supervise. It is clear in this example that Radical Boards was not aware initially of the fact that Keller had created and utilized the peep holes. However, it was nevertheless their duty to supervise their employees. This can be considered negligent supervision. Negligent supervision occurs when a person is meant to supervise others, but fails to do so in a responsible manner. This can include the supervision of employees.