Final answer:
Human vs. Mechanical is a classification in which method of observation? It is a method of human observation that involves using the human senses to detect and measure characteristics of the subject being observed.
Step-by-step explanation:
The classification of Human vs. Mechanical is a method of observation in which human observation is used. It involves using the human senses to detect and measure characteristics of the subject being observed. In contrast, mechanical observation would involve the use of instruments and measuring devices that enhance human senses.