Respuesta :
Answer:
The correct answer is D: "With so many conflicting theories about the lights, people complain that there will never be a definitive answer about their origin."
Explanation:
Marfa lights refer to the apparition of unusual lights near U.S. Route 67 in Texas. As there didn't exist any logical explanation, this phenomenon was attributed to supernatural, paranormal concepts, like aliens, ghosts, etc.
In our sentence, the author clearly indicates that there are so many theories about these lights, that it will remain an eternal mystery.