Which of the Following Statements Best Describes the Change That

Which of the following statements best describes the change that took place in animal psychology following the work of Romanes and Morgan?​

A) ​The field became more subjective as methods to study animal consciousness were perfected.
B) The field became more objective as mentalistic terms were dropped from the descriptions of behavior.
C) ​The field stopped growing after Angell's 1906 presidential address describing functionalism.
D) The field was growing in popularity in Russia but was never a major part of psychology in the United States.
E) There was no change,the methods of Romanes and Morgan are still widely used today.