Answer:
Roshika has been invited to a fancy dinner party and wants to bring a good bottle of wine as a gift for the host. Since she does not know much about wine, she will likely use the price of the wines as an indicator of quality.
Explanation:
Roshika's idea of gifting a bottle of wine to the host of the party is quite generous, but, a problem she is facing while buying wine is that she doesn't know much about good wine. To overcome this problem she has a common solution adopted by a majority of people in today's world of economy, she is using the price of the wine as an indicator of quality. This means that the higher the price of the product, higher will be its quality.
