Answer: pretty sure it's C hope this helps:)
Explanation:
I believe The answer is an Analogous scheme of colors.
A: 1 2 3 4 / 1 2 (3) 4 / 1 2 (3) (&) 4 / 1 2 3 & 4 /
B: 1 2 3 4 / 1 2 3 4 & / 1 (2) 3 (4) (&) / 1 (2) 3 (4) /
C: 1 2 3 4 / (1) 2 3 4 / (1) (&) 2 3 4 / 1 2 3 4 /
D: 1 2 & 3 4 & / 1 (2) (&) 3 (4) (&) / 1 2 (3) 4 / 1 2 (3) 4 /
E: 1 2 3 4 / (1) (2) (3) 4 / 1 2 3 (4) / 1 2 & 3 4 & /
F: 1 2 (3) 4 / 1 2 (3) (&) 4 / 1 2 & 3 4 / (1) 2 & 3 4 /
G: 1 (2) (&) 3 4 / 1 & 2 (3) 4 / 1 & 2 (3) (&) 4 / 1 2 (3) 4 /
H: 1 2 & 3 4 & / 1 (2) (&) 3 (4) (&) / 1 2 (3) (&) 4 / 1 (2) (&) 3 (4) (&) /
