Multiple Choice
The figure below shows a graph of the scale factor, RU, with time, for three different scenarios.The age of the universe is the difference between now and the time at which RU is zero. Which curve illustrates an accelerating universe?
A) A
B) B
C) C
D) All of these curves are valid for an accelerating universe.
E) None of these curves is valid for an accelerating universe.
Correct Answer:

Verified
Correct Answer:
Verified
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