Multiple choice

Which of these is not a reason Pluto is a dwarf planet?

  1. Too small

  2. Doesn't orbit sun

  3. Unusual orbit

  4. Unlike other outer planets

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pluto is classified as a dwarf planet because it has not cleared its orbital neighborhood, but it definitely orbits the sun. The other options describe characteristics that contributed to its reclassification or its unique nature.