Which of the following can help to increase the receptiveness and readiness of participants in training programs? a. Using relatively simple rewards to discourage undesired behaviors and encourage and maintain desired behaviors b. Hiring trainers with a sense of humor, ability to communicate clearly, and willingness to provide individual assistance to trainees c. Having trainees complete questionnaires about why they are attending training and what they hope to accomplish as a result of it d. Providing training consisting of real-life demonstrations and recorded demonstrations, visual aids, pictures, and drawings