"In 1860, the First Private, English-Speaking Kindergarten Was Established in Boston

Multiple Choice

"In 1860, the first private, English-speaking kindergarten was established in Boston by Elizabeth Palmer Peabody ..." (Rippa, S.A., 1988, Education in a free society, New York: Longman, p.173) .Suppose you wanted to research the effect of this first American kindergarten on the people's attitudes and perceptions of Massachusetts' education of that time.Which might be a primary source of information?

A) A log by Peabody of the problems creating the school
B) An opinion poll of educational attitudes of Boston in 1860
C) A verbatim text of an 1860s political speech concerning educational practices
D) All of these are true.