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15. Information in the second paragraph (lines 17–25)
establishes that one degree of longitude translates into
a distance of:

  • A. sixty-eight miles at Earth’s equator but less on
    either side of Earth’s equator.

  • B. sixty-eight miles at Earth’s equator but more on
    either side of Earth’s equator.

  • C. one thousand miles the world over.

  • D. virtually nothing at Earth’s equator, increasing to a
    maximum of sixty-eight miles at the poles.