Answer: Because research allows a person to speak properly about a topic.
Explanation: When the person has good research habits, he is someone who is able to choose and identify valuable information and what is not. This is related to being ethical since he can speak having knowledge about a subject and thus does not misinform others. Someone who investigates is one who does not stay with what they only know, they also dedicate themselves to seeing things from another perspective, something that helps to put themselves in the shoes of others and not to have a subjective perception of things around them.