Step 1: Identify the stores named.
Chain stores, hypermarkets and department stores are large, licensed and professionally run retail outlets.
Step 2: Name the type of retailing.
Retailing by licensed retailers who are registered for sales tax, income tax and so on is called organised retailing.
It runs on the principle of unity.
Step 3: Contrast with the other type.
Unorganised retailing means hawkers, peddlers and kirana (mom and pop) shops. They have no fixed set-up and follow the principle of singularity.
The question talks about growing chain stores and hypermarkets, so it cannot be unorganised retailing.
Final Answer:
The blank is filled by organised retailing.