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Discussion

This passage mainly

  • A.describes how long an eclipse will last
  • B.gives facts about the moon
  • C.explains how the sun is able to obscure the moon
  • D.informs the reader about solar eclipses

Answer: D

The passage mainly informs the reader about solar eclipses.

Para 1 defines a solar eclipse and its three kinds (partial, annular and total), and para 2 explains how the moon can cover the sun and how long a total eclipse lasts. Together these give general information about the topic.

The duration of a total eclipse is only one detail, so A is too narrow. The passage uses facts about the moon only to explain eclipses, so B misses its purpose. Option C reverses the relation: it is the moon that obscures the sun, not the sun the moon.

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