The Michelson–Morley experiment found:

  1. no change in the speed of light due to the Earth's motion
  2. that light slows down in the direction of motion
  3. the 'aether'
  4. that light is infinitely fast
Answer

A) no change in the speed of light due to the Earth's motion

Supports Einstein's postulate. SLO P-11-F-02 · Understanding

Physics MCQ · More Special Relativity MCQs · Practise