Answer:
c. The shoe retailer is gathering raw data because he is recording shoe sizes and styles by himself.
Step-by-step explanation:
He records this data for an entire year by keeping track of his customers' purchases.
His customer's purchases will be from his shop and no one elses from the neighbours or of other company.
The only way to keep record of his customers' purchases is from his shop.
Option a is incorrect because he wants to check the drive force of his shop not other shops.
Option b is also incorrect because the items bought indicate the purchases not the preference told.
Option d is also incorrect becuase nearby companies wil have their own styles and sizes collection.
