Multiple Choice
The term observable universe refers to .
A) the portion of the universe that can be seen by the naked eye
B) the portion of the universe that is not hidden from view by, for example, being below the horizon
C) that portion of the universe that we can see in principle, given the current age of the universe
D) that portion of the universe that we have so far photographed through telescopes
Correct Answer:

Verified
Correct Answer:
Verified
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