Answer:
Conventional or stylistic decorative design is an adaptation from nature. Naturalistic design is a realistic adaptation from nature. Abstract and geometric decorative design has no direct relation to nature.
A. affect
Affect can sometimes be a noun, but it is mostly used as a verb that describes some sort of change or difference.
On the other hand, the word effect is not an action nor verb; it is a noun that refers to the result of a cause.