Even a . . . . . . . glance will reveal the mystery.

crude
cursory
critical
curious

The correct answer is: B. cursory

A cursory glance is a quick and superficial look. It is not a careful or thorough examination. In the context of the sentence, “Even a cursory glance will reveal the mystery,” the speaker is suggesting that even a quick look at something will be enough to understand it.

The other options are incorrect because they do not convey the meaning of a quick and superficial look.

  • Crude means lacking in refinement or sophistication.
  • Critical means expressing or involving an adverse judgment.
  • Curious means eager to know or learn something.