Riddle

I can be full, but I will never spill. I disappear at times, but return I always will.

Choose an answer

A.Cup
B.Battery
C.Tide
D.Moon
Hint: It's a word with 4 letters, starting with "M".

Answer

Moon

Why this is the answer

The moon can appear 'full' without ever spilling anything, and it seems to disappear (new moon) before reliably returning each month.

This riddle is filed under Short Riddles and rated Easy.

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