Select the most appropriate option that can substitute the underlined segment in the given sentence.
The unique concept of a heritage and educational district peeked volumes of citizens and heritage enthusiasts in the whole district.
The sentence essentially conveys that the concept of a heritage and educational district raised/attracted the interest of citizens in the whole district.
Option C piqued the interest and best fits our sentence.
When something piques your interest or curiosity, the verb pique means to arouse, stimulate, or excite.
Therefore, option C is the correct answer.