Final answer:
The Director of National Intelligence oversees the U.S. intelligence community, coordinates intelligence activities, and prepares the president's daily intelligence brief.
Step-by-step explanation:
The purpose of the Director of National Intelligence (DNI) is to oversee the entire intelligence community in the U.S. government and ensure that the president and other policymakers are provided with the best possible intelligence. The DNI is responsible for coordinating and integrating intelligence activities among the various intelligence agencies, as well as preparing the president's daily intelligence summary. This involves both using intelligence services to defeat external threats to the country and employing counterintelligence services to protect the nation from internal threats.
Correct Answer: C. The DNI was created to coordinate intelligence activities and prepare the president’s daily intelligence summary, as part of the government reorganizations after 9/11. This role does not encompass immigration enforcement, leading covert activities, or diplomatic activities, but rather central coordination and advisory functions within the intelligence field.