The fact that this has been posted multiple times defeats its purpose, but i'm pretty sure there is a correct answer on the other post.
The flavor of the food is the aroma being release during chewing. When someone smells and taste the certain food for the first time it then would be register in his or her mind making it a memory so that next time he or she will smell the certain food,automatically the body would process what was place in the memory of the specific food. This benefits the fast food industry as aroma and memory would demand sensory analysis to know the products acceptable to the customers so that they will know what to cater them.
It helps the reader better understand the surroundings and why things happen
Option a. the beginning of a story, when the characters are introduced
Exposition is the insertion of the important background within a story. It is the process of scattering information through the text. Incluing is a technique in which the reader is gradually exposed to background information about the world in which the story is set. The idea is to clue the readers into the world the author is building them without being aware of it.