Verified answer

*diamonds

*use

Is this really homework?

Anyways, you need to look about 15 blocks above bedrock. Just mine at those levels all over the place, and eventually you will find diamonds. They only spawn near that level.

When I'm playing and I want to find diamonds (even though they're overrated) I usually dig down to the very top of Bedrock and make a straight pathway with more pathways dissecting off of that. I found about 8 diamonds within 10 minutes of using this technique, always have some cobblestone or something on you to block off lava if you hit it. I hope I helped! :)

go down to bedrock and sart digging youll find them