In the 1920s, Professor Sandiford Administered IQ Tests

In the 1920s, Professor Sandiford administered IQ tests. What recommendation did he make based on his results?

A) Canada's education system should especially serve the "forgotten" gifted learners.
B) Certain racial groups had inferior intelligence and therefore should be streamed into vocational training.
C) Canada's education system should favour the advancement of science and technology, and leave literature and the "softer" subjects in the elementary schools.
D) Canada must adopt selective immigration to keep Canada safe from misfits and defectives.