If you visualize the stages of atkinson and shiffrin's model of memory as a funnel, the stage at the mouth of the funnel is:

the stage at the mouth of the funnel is: sensory memory
Sensory memory allows individuals retain a certain information for a short period of time before it transferred into the long-term memory.
This type of memory would be received through the utilization of any part of our five Senses.

The correct answer is letter D. Body Structure. It is not considered as one of the preferences to have racial differences. The most common one is the skin color, either black or white or yellow, etc.