Answer:
The highest discount offered by Roma Company.
Explanation:
Let the cosmetics marked price be 100.
It is given that Walgreens is offered a chain discount on cosmetics from Libby Corp. of 8%, 5%, 2%.
The selling price of cosmetics after chain discount is

Discount = Marked price - Selling price

The total discount percentage in Walgreens is 14.348%.
It is given that Roma Company is offered a chain discount on cosmetics of 7%, 6%, 4%.
The selling price of cosmetics after chain discount is

Discount = Marked price - Selling price

The total discount percentage in Roma Company is 16.0768%.
Since 16.0768% > 14.348%, therefore the highest discount offered by Roma Company.