Are talking about on a piano?
Answer:
The answer is the first one, the use of 1 color in a variety of tints and shades. Keep in mind that mono means 1. This will help you in the future.
Explanation:
Answer:
The practice of decorating jack-o'-lanterns originated in Ireland, where large turnips and potatoes served as early canvasses
This is not a legit question since you will never find an elephant with one hand