Multiple choice

Directions: Fill in the blank.

Irregularities in the orbits of some planets have allowed astronomers to _____ the existence of other, as of yet undiscovered, planets.

  1. adumbrate

  2. collate

  3. infer

  4. derive

  5. forestall
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Astronomers use observed irregularities to conclude that other planets exist. 'Infer' is the correct term for drawing a conclusion based on evidence.

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