Chan lee, an asian primatologist, studied different groups of gorillas over a period of 18 years. she studied them daily in the subtropical forests of africa to understand their mating and reproductive habits. based on her observations, chan found that male gorillas are ready to mate when they are 15 years of age. in this scenario, descriptive method of research used by chan can be best termed as a(n)

naturalistic observation

Explanation:

Naturalistic observation -

It is the method of observation in the research field , where the method used is observing the object of study in their particular natural environment , is referred to as naturalistic observation.  

This helps to get a pure and proper source of knowledge for the research work , and helps to understand the subject is the best possible way.  

Hence, from the given scenario of the question,  

Chan Lee observe the gorillas in their natural habitat , i.e. ,in the subtropical forests , to get the best information , showcasing naturalistic observation.  

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