1.
The passage first talks about astronomers' assumptions regarding the earth's and
moon's radii and core mass. The next two paragraphs detail the two methods
astronomers employed to analyze their assumptions by using data collected by
Lunar Prospector. The last paragraph discusses the implications of this data.
(A) This choice founders over the use of the singular word "method" and the word
"proved." There were two methods, and "proved" is too extreme.
...
The passage first talks about astronomers' assumptions regarding the earth's and
moon's radii and core mass. The next two paragraphs detail the two methods
astronomers employed to analyze their assumptions by using data collected by
Lunar Prospector. The last paragraph discusses the implications of this data.
(A) This choice founders over the use of the singular word "method" and the word
"proved." There were two methods, and "proved" is too extreme.
...