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:
Formal balance means the display is symmetrical, and structural balance means asymmetrical.
hope this helps.
Answer:
well, their name silly!
Explanation:
their not technically the same, since C major is the flattest of them all, but, if you think about it, they're only similar due to name!