Final answer:
A trainer should use sensory channels such as visual processing, touch, hearing, and taste to facilitate learning.
Step-by-step explanation:
A trainer should facilitate learning by using sensory channels such as visual processing, remembering past experiences, touching physical objects, hearing sounds, and tasting food. Students can make mental images, imagine changes and behaviors, and anticipate consequences through these sensory-based inputs. Cognitive learning, which involves these sensory channels, is powerful for understanding conditioning and cognition.