The correct statement is option 1: 1 only.

Option 1 states that the District Collector directs and supervises the revenue department of the district. This is true, as the District Collector is responsible for overseeing the administration of revenue matters in the district. They are in charge of land revenue, land records, and other revenue-related issues.

Option 2 states that the District Superintendent of Police grants licenses for arms and explosives in the district. This statement is incorrect. The District Superintendent of Police is primarily responsible for maintaining law and order in the district and ensuring the safety and security of the residents. The granting of licenses for arms and explosives is usually the responsibility of the licensing authority at the state level, such as the State Home Department or the Office of the Director General of Police.

Therefore, the correct answer is option 1 - only statement 1 is correct.

Alert - The statement in option 2 is incorrect. The correct answer should be option 1 only.