Answer:
The correct answer is C. Empiricist.
Step-by-step explanation:
An empiricist can be understood as someone who uses the empirical method of study.
The empirical method of study can be understood as a type of method in which the most important aspect is the collection of information, usually via observation and experimentation to analyze it and confirm or disprove a hypothesis.
In this particular case, Karine has heard that people are more likely to yawn after seeing others yawn. In order to prove or disprove this statement, she decides to use the empirical method by deciding to observe people to deterimne if this is true.
In conclusion, Karine can be called an: C. Empiricist.