PT 14 S3 Q4

   It is a fundamental tenet of geophysics that theEarth's magnetic ... ...

Which one of the following statements regarding the polarity of the Earth's magnetic field is best supported by information in the passage?
(A) Most, but not all, geophysicists agree that the Earth's magnetic field may exist in two distinct polarity states.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Practice Set: Science & Technology Mix 1