Final answer:
You are simplifying the textbook seller's visual search by providing specific details about your location and attire, which aids in rapidly identifying you, illustrating top-down processing.
Step-by-step explanation:
When you inform the textbook seller that you are beside the Tim Hortons wearing a blue shirt and black jeans, you are attempting to simplify their visual search to find you in a busy environment. This is known as top-down processing, which is deliberate and under the control of the searcher, based on the information you have provided. By specifying your location and attire, you make it easier for the seller to identify you among the many potential distractions in the student center. The correct answer in this context is B), as you are converting a complex search into a simple feature search that can expedite the recognition process.