[Solved] The use of music lyrics or poetry to add interest to a portfolio: A) is always allowed under the fair use guidelines. B) requires permission from the copyright holder. C) is not appropriate in a professional portfolio. D) is exempt from copyright laws. Systematic Desensitization: A behavior therapy used to reduce phobic or anxiety responses through gradual exposure to the feared object or situation coupled with relaxation training. Fear of Heights: An intense fear or phobia of being in high places, known scientifically as acrophobia, affecting an individual's ability to function in situations involving elevation. Classes: Groups or categories into which objects, ideas, or people are divided based on shared characteristics or attributes. Aversion Therapy: A behavior therapy in which an aversive stimulus is paired with a harmful or socially undesirable behavior until the behavior becomes associated with pain or discomfort.