True appreciation is the action of acknowledging what someone is or something is, havin the empathy to show appreciation and creating an environment where everyone is and feels properly appreciated, and in order to be able to do this we have to recognize the value that people have and what they bring and add to the situation.
The answer that fits the blank given is RECOGNITION OF. Therefore, you can say that true appreciation is present when there is thoughtful observation, knowledge of the subject and the recognition of value because once a value is recognized, this when you say that the appreciation is done genuinely. Answer is C.
This website has information on forms of Human observation to be pretty broad. It doesn't have anything specific with Bolivian villagers or there looms. http://www.psychologydiscussion.net/behaviour/7-methods-of-studying-human-behaviour/540
During the prewriting it’s important to plan what you are writing and where/when you’ll write it. The prewriting stage is important because it helps organize all thoughts and ideas on the subject you’re writing.