Answer:
The correct answer is: A) Use the scientific method to collect data and establish facts.
Step-by-step explanation:
The scientific method can be understood as an empirical method, which means that it relies on observation and experimental measures.
When someone applies the scientific method, he or she formulates a hypothesis and then goes on in doing experiments to prove or disprove said hypotheses.
One of the objectives of implementing the scientific method is to avoid biased and opinionated knowledge because it is based on objective, observable phenomena.
In this particular case, Dr. Henderson is curious to know more about how children's peer relationships develop over time. To gain an understanding of this subject that is not based on opinion or personal bias, Dr. Henderson should: A) Use the scientific method to collect data and establish facts.