The core concept of this question is to test the understanding of the term 'robotics'. The correct answer is 'D. Robotics' because the passage directly states that robotics is the science of conferring various human capabilities on machines. Option A, Mechanics, is incorrect because it refers to the study of forces and motion, not the creation of human-like machines. Option B, Artificial Intelligence, is incorrect because it focuses on creating machines that can perform tasks that would require intelligence in humans, but it does not necessarily involve giving machines human capabilities. Option C, Ingenious Design, is incorrect because it is a vague term that does not specifically refer to the science of creating human-like machines.