Final answer:
The 'location factor' for KFC store sites in Japan takes into account the number of people passing by, the color of the building, and the type of chairs.
Step-by-step explanation:
When calculating the "location factor" for KFC store sites in Japan, factors such as the demographics of the area, the volume of foot traffic, and accessibility are typically considered. Among the options provided in the question, c) The number of people passing by is considered an important factor. A high volume of passersby can indicate a strong potential for the customer base, making it a valuable attribute for restaurant locations, including KFC in Japan.