the canterbury tales was a popular book of the period because it \ncontained many different stories.\n had…

the canterbury tales was a popular book of the period because it \ncontained many different stories.\n had characters from all walks of life.\n was written in easy-to-understand language.\n described middle- and upper-class fashions.
Answer
Brief Explanations:
"The Canterbury Tales" by Geoffrey Chaucer was popular partly because it was written in Middle English (specifically, the London dialect), which was more accessible to the common people than Latin or French (the languages of learning and nobility at the time). The other options: having many stories or diverse characters was not unique in making it popular, and it didn't focus on middle - upper - class fashions as a primary reason for popularity. So the key reason related to its accessibility through language makes "was written in easy - to - understand language" the correct choice.
Answer:
C. was written in easy - to - understand language (assuming the options are labeled A, B, C, D with C being "was written in easy - to - understand language")