Environmental Protection Agency = regulation of pollution and conservation of energy ( the environmental protection agency was formed in December 1970 by an executive order of President Richard Nixon, which intended to protect human and environmental health).
Occupational Health and Safety Organization = protection and safety of workers ( it is a multidisciplinary field concerned with the health, safety and welfare of people at work. The goal of the agency include to promote a safe and healthy work environment)
Food and Drug Administration = inspection and approval of food products ( FDA is a federal agency of the United States, which is responsible for protecting and promoting Public health through the control and supervision of food safety).
The land had a lot of gold which was taken by the Spaniards when they took control of the island, and since there was a lot of gold and since it is an island the trade flourished there, hence the name Puerto Rico, which is Spanish for Rich Port
The right answer is most likely to be 2). The rest are assumptions that cannot be made due to a lack of supporting evidence, or just simply not mentioned.