The book McGuffey Primer uses British stories, primarily in English language, and are aimed at moral and social lessons.
The McGuffey books are considered as an integral set of literature, meant to be read and understood by children for the purpose of encouragement of the moral and social standards of the English society.
Hence, option B, the McGuffey books are used extensively to teach moral and social standards to the British children in the society.
Learn more about McGuffey books here:
https://brainly.com/question/11507500
#SPJ1