Answer: either A or D but i'm pretty sure that it's D
Explanation:
The answer is 0.7777777778
Triangles, squares and hexagons are the only regular shapes which tessellate by themselves. You can have other tessellations of regular shapes if you use more than one type of shape. You can even tessellate pentagons, but they won't be regular ones.
I would work extra to organize it if my boss let me then I would get extra money
