HoneyLemon
Since the early weeks of 1970, conspiracy theorists and alien
enthusiasts are debating the authenticity of audio recordings released by NASA, which supposedly show that astronauts on the far side of the moon, the side of the moon beyond radio contact with Earth, in May 1969, listening to unexplained music, potentially of extra-terrestrial origin.
(A) enthusiasts are debating the authenticity of audio recordings released by NASA, which supposedly show that
(B) enthusiasts have debated the authenticity of audio recordings released by NASA, which supposedly show
(C) enthusiasts, debating the authenticity of audio recordings released by NASA, supposedly have shown
(D) enthusiasts debated the authenticity of audio recordings released by NASA and supposedly showed
(E) enthusiasts have debated the authenticity of audio recordings released by NASA, supposedly showing
OE
Since the early weeks of 1970, conspiracy theorists and alien enthusiasts are debating the authenticity of audio recordings released by NASA, which supposedly show that astronauts on the far side of the moon, the side of the moon beyond radio contact with Earth, in May 1969, listening to unexplained music, potentially of extra-terrestrial origin.
(A) enthusiasts are debating the authenticity of audio recordings released by NASA, which supposedly show that
The use of the present continuous “are debating” does not make sense in this context because, while the action “debating” may be ongoing in the present, the sentence indicates that the action begin at a point in time in the past, “the early weeks of 1970.” The present continuous, which indicates that an event is ongoing in the present, does not match a timeframe that began in the past.
Also, the presence of “that” renders the end of the sentence illogical. “Recordings …, which … show that” should be followed by a clause describing what the recordings show, but, in this case, only a noun, “astronauts,” and modifiers that modify “astronauts” follow “show that.” So, basically the sentence says “recordings show that astronauts” without a verb that expresses what the astronauts did. “Listening,” a participle, cannot on its own serve as a main verb and simply modifies “astronauts.”
(B) enthusiasts have debated the authenticity of audio recordings released by NASA, which supposedly show
Because it makes sense that the conspiracy theorists and alien enthusiasts would have debated the authenticity of the recordings from the early weeks of 1970 to the present, the use of the present perfect “have debated” makes sense.
Also, since it makes sense that the recordings would still exist in the present and still show astronauts on the far side of the moon listening to music, the use of the present tense “show” makes sense.
Correct Answer
(C) enthusiasts, debating the authenticity of audio recordings released by NASA, supposedly have shown
While this version is grammatically correct, it expresses a meaning that does not make sense, that, since the early weeks of 1970, in the process of or as a result of debating the authenticity of audio recordings, conspiracy theorists and alien enthusiasts have shown astronauts on the far side of the moon listening to unexplained music in May 1969. People would not show astronauts by debating, and would not, by debating since the early weeks of 1970, show astronauts on the far side of the moon in May 1969.
(D) enthusiasts debated the authenticity of audio recordings released by NASA and supposedly showed
The use of the simple past “debated” after “since the early weeks of 1970,” while not strictly incorrect, does not quite make sense. “Since the early weeks of 1970” sets the beginning of a timeframe, while there is no clear logical reason in this case to set the beginning of a timeframe. The sentence says simply that the conspiracy theorists and alien enthusiasts debated, a statement that seems to indicate that the conspiracy theorists and alien enthusiasts debated on one or more discrete occasions, not over a period of time. So, there is no logical connection between the setting of the beginning of the timeframe and the action described by the sentence.
Also, the sentence conveys the illogical meaning that that, since the early weeks of 1970, the conspiracy theorists and alien enthusiasts showed astronauts on the dark side of the moon in 1969.
(E) enthusiasts have debated the authenticity of audio recordings released by NASA, supposedly showing
The participial phrase “supposedly showing …” at the end of the sentence set off from the rest of the sentence by a comma would most logically take the subject of the sentence, “conspiracy theorists and alien enthusiasts,” as its agent. Therefore, the sentence expresses the nonsensical meaning that, by debating the authenticity of audio recordings since the early weeks of 1970, conspiracy theorists and alien enthusiasts have shown astronauts on the far side of the moon in 1969.