Riddle

It is very hard to create me, but I can't be destroyed. I can only change form.

Choose an answer

A.Matter
B.Time
C.Force
D.Energy
Hint: It's a word with 6 letters, starting with "E".

Answer

Energy

Why this is the answer

The Law of Conservation of Energy states energy cannot be created or destroyed.

This riddle is filed under Science Riddles and rated Medium.

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