an ecologist counts weeds to monitor their populations. which of the following best describes the ecologist methods?

Observation is the method of which best describes the ecologist’s method.  

Observation is part of the scientific process by which the ecologist will undergo when he's done with this insight of scrutinizing the current weed population. After sorting this out the act of hypothesis making will be the next in the procedure. Followed by the experimentation, that is undergoing the said process to verify and analyse the information. Interpret the data and then make conclusions in the outcome.