Final answer:
All three eyewitness accounts in the UFO passage—Pam Markesan, Mr. Mendez's neighbor, and the reporter—are considered primary sources because they directly witnessed the events they describe. Therefore, the correct answer is that all three are primary sources.
Step-by-step explanation:
The question asks which eyewitness accounts can be considered primary sources. A primary source is an account of an event by someone who directly experienced or witnessed the event firsthand. In the UFO passage referenced, the three eyewitnesses—Pam Markesan, Mr. Mendez's neighbor, and the reporter—all provide direct accounts of their experiences.
The eyewitness accounts in the passage can be described as follows:
Pam Markesan is a primary source as she directly saw the spinning, disc-shaped craft in the New Mexico sky.
The neighbor of Mr. Mendez is also a primary source as he witnessed Mr. Mendez walking up the ramp to the giant, disc-like craft.
The reporter sent out to the military base is a primary source as he personally saw the remains of a large, saucer-shaped craft inside a hangar on the base.
Pam Markesan describes seeing a spinning, disc-shaped craft, the neighbor witnesses Mr. Mendez walking up to a craft, and the reporter sees a damaged saucer-like craft at the military base. Therefore, the correct answer is that all three are primary sources.