WHAT WAS THE MAJOR DIFFERENCE BETWEEN THE CONTROL GROUP AND THE EXPE...

câu 5: - Đề thi thử THPT 2020 môn Tiếng Anh trường THPT Nguyễn Trung Thiên – Hà Tĩnh
Tiếng Anh Đề thi thử THPT 2020 môn Tiếng Anh trường THPT Nguyễn Trung Thiên – Hà Tĩnh

Câu 5: What was the major difference between the control group and the experimental one in the study?

A. The age of the children B. The books that were read

C. The training that parents received D. The number of participants