Who provided leadership in developing laws promoting conservation? A. Ida Tarbell
B. Theodore Roosevelt
C. Dorothea Dix
D. Mother Jones

mother jones

Explanation:

The problem with asking questions is that people can view questioning in different ways. Some people might consider your questions to be a threat or a way of apportioning blame if things have gone wrong. For others, questions may be viewed as an indicator of your interest in their work. On other occasions questioning may seem like a test of knowledge for the person you are approaching. In the best situation people will view your questions as your attempt to offer help and to collaborate and support their work

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.

answerthe same historical circumstances;