When a reader makes inferences based on the details provided it enables the reader to

Through these inferences, the reader is able to gain a more in-depth understanding of what it is exactly the author is discussing or trying to hint at within the plot. If the reader is able to come to their own conclusions about the way a novel might be going, this evidently means the plot has a strong direction and tone.

Idk why? is the answer

The answer is a. society, sociology is the  systematic study of social interaction. it's a social science.