In means that things or items are separate from all other items. <span />
The difference between ratio and proportion can be drawn clearly on the following grounds: Ratio is defined as the comparison of sizes of two quantities of the same unit. Proportion, on the other hand, refers to the equality of two ratios. The ratio is an expression while proportion is an equation which can be solved.
Answer is C (a basic structure the most fiction follows).
A plot mountain is a structure that most fiction stories use to organize themselves.
It sounds like A would be the best choice but i am not sure
Grammatical error should be the answer