Symbols are markers that people collectively agree to refer to a certain object. It can include all phenomena that show meaning in any form through feeling. In these phenomena, something that can be felt is the embodiment of the object's meaning. According to the definition above, Which of the following options are consistent:. ['Tongue coating observed during TCM diagnosis.', 'Compass used by people in the wild.', 'Traffic lights for crossroads.', 'The smell of human body when search-and-rescue dog rescue people.']