GRE Text Completion Question 3556
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Source: NO9
It was not only the (i)_____ of geologists that (ii)_____ earlier development of the revolutionary idea that the Earth's continents were moving plates; classical physicists, who could not then explain the mechanism, had declared continental movement impossible.
- A indecisiveness.. challenged
- B radicalism.. deterred
- C conservatism.. hindered
- D assumptions.. hastened
- E resistance.. mandated