Riddle

What is a device that you always have access to, that do not require recharging, and can record all of the useful information you have learned?

Choose an answer

A.A notebook
B.A smartphone
C.A voice recorder
D.Your brain!
Hint: It's a 2-word phrase with 9 letters, starting with "Y".

Answer

Your brain!

Why this is the answer

The brain naturally stores memories and knowledge without ever needing an external power source.

This riddle is filed under Time, Money, Music Riddles and rated Easy.