Buenos Aires has the highest concentration per capita of what business?

Here is the question :

BUENOS AIRES HAS THE HIGHEST CONCENTRATION PER CAPITA OF WHAT BUSINESS?

Here is the option for the question :

Supermarkets
Bookstores
Bakeries
Art galleries

The Answer:

And, the answer for the the question is :

Bookstores

Explanation:

[STC0015147]. Many people consider the capital city of Argentina to also be the world’s capital of bookstores. This is due to the fact that Buenos Aires has around 734 bookshops for its population of 2.8 million people. This works out to almost 25 bookshops for every 100,000 persons in the city. Following Madrid and London in terms of the number of bookstores available per capita is Hong Kong, which has approximately 22 bookstores for every 100,000 residents.