Mostly, it would be social scientists however, some biologist could also explain these behavioral characteristics and temperaments like geneticists and cognitive scientists.
Variables and factors like the biological, environmental and evolutionary component of how a trait is unearth by these experts.
Answer: The answer is D - Beautiful leaves.
Explanation: Subjective data is gathered from the patient telling you something that you cannot use your five senses to measure. If a patient tells you they have had diarrhea for the past two days, that is subjective, you cannot know that information any other way besides being told that is what happened.