The substage condenser is either incorrectly positioned or the light stop is the wrong size for the objective- or there me be a smudge/mark on the eyepiece
The correct answer is C.Capsule i just finished a test on this
Answer: it’s distant objects shift in frequency toward red on the electromagnetic spectrum, which tells us objects are moving away from us!
Explanation: This is correct because I got this one right on my quiz and I took notes on it!