Riddle

I enclose you in darkness but allow you to see many things. If you resist me, you're likely to get rings. What am I?

Choose an answer

A.Darkness
B.A blindfold
C.A dream
D.Sleep
Hint: It's a word with 5 letters, starting with "S".

Answer

Sleep

Why this is the answer

Closing your eyes to sleep shows you images (dreams) in darkness, and fighting off sleep too long can leave you with dark rings under your eyes.

This riddle is filed under "What Am I?" Riddles and rated Medium.