Principle of arts and the last answer is the principle of design.
The correct option is A.
Art Deco Art originated in Paris and it had influence architecture and culture. The style first appeared just before World War 1 and it influenced the designs of building, jewelry, furniture, fashion, cars, trains, etc but it features more prominently in building. In the 1920s, the New York architects used the new art deco to build some buildings including the empire state building.<span />
In 1929 the "<span>Start Farmer of America award" was first awarded, if that's what you're referring to.</span>
1. It meant that they are flat, unlike 3-dimensional objects: you can place them on a table and one of their sides will be a like. This also means that they cannot show depth very well.
2: It means that it can create an illusion or an abstraction, that we can consider aesthetic. For example, while we enjoy drawings, which are 2-dimensional, it could be that we would consider their 3d-version scary
3: the limitation is that they cannot show depth. For example, an orange appears as a circle, not a sphere: so a part of the information is missing.