Looks like a violin but sounds slightly lower, what is it?

I'm not sure if there was supposed to be an image but I think you're talking about a viola.

A viola

Explanation:

The viola is the older sister or brother of the violin. It is slightly larger, just over two feet long, and has thicker strings, which produce a richer, warmer sound than the violin. There are usually 10 to 14 violas in an orchestra and they almost always play the harmony. You play the viola the same way as you do the violin, by resting it between your chin and shoulder. Your left hand holds the neck of the viola and presses down on the strings to change the pitch, while your right hand moves the bow or plucks the strings.

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i also think it is c