Step 1: Understand what 'Blue Flag' certification is.
Blue Flag is a prestigious, voluntary eco-label awarded to beaches, marinas, and sustainable boating tourism operators. The program is run by the international, non-governmental Foundation for Environmental Education (FEE).
Step 2: Know the main pillars of the certification.
A beach must meet a series of stringent criteria across four main categories to qualify for the Blue Flag award. These are:
(A) Environmental Education and Information
(B) Water Quality
(C) Environmental Management
(D) Safety and Services
Step 3: Evaluate the options against these pillars.
(E) (A) Marine biodiversity is important for the ecosystem but is not a direct primary category for the award itself.
(F) (C) Tourism infrastructure is related to 'Safety and Services' but is only one part of the criteria.
(G) (D) Historical significance is not a criterion.
(H) (B) Water quality and environmental management accurately represents two of the four core pillars of the Blue Flag program. This option is the best summary of the main environmental criteria.