PrepTest 132, Section 3, Question 10
A vigorous debate in astronomy centers on an(463 more words not shown)
The author mentions that the(14 more words not shown)
- Asupport a particular(7 more words not shown)
- Bquestion the lack(6 more words not shown)
- Cadvocate certain scientific(8 more words not shown)
- Dprovide a reason(8 more words not shown)
- Eintroduce additional support(6 more words not shown)
Reading the passage
Why mention Earth while introducing a debate based on Moon rocks? Read through the rest of the sentence: life could not have survived here until the bombardment ended. That gives the astronomical question consequences for our own planet.
Working the answers
- A
The statement introduces the issue's significance before the competing theories are laid out. It isn't offered as evidence favoring one of those theories over the others.
- B
The author isn't asking why evidence is missing from Earth. The point is what bombardment here would have meant for life.
- C
No scientific model of how life originated is advocated. A limit on when life could survive is not an explanation of how it began.
- DCorrect
The link to life's history explains why scientists care about the LHB. Its consequences extend beyond the craters that first brought it to their attention.
- E
The statement concerns where the bombardment should have struck and why that matters. It adds no evidence for the four-billion-year date.
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