The best and most correct answer among the choices provided by the question is the first choice , a. restrictive.
Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.
Yea, it is <u>true</u> that psychologists use a systematic method to conduct psychological research in order to increase consistency across studies.
<h3>What is the psychological research process? </h3>
The psychological research process makes use of observation and experiments for evaluating different behavior of people compared to a focused group.
Therefore, it starts from asking a question, collecting data, assessing of data, and deriving final conclusions.
Learn more about psychological research here:
brainly.com/question/1204644