When we use the word "automobile" to refer to a category of transport vehicles, we are using this word as a (C) concept.
A concept is a mental representation of a category or class of objects, events, or ideas that share common features or characteristics. The concept of an automobile includes a range of vehicles that share certain characteristics, such as having four wheels, an engine, and being designed for transportation on roads.
A mental set refers to a fixed way of thinking about a problem or situation that limits our ability to find new solutions or approaches. A heuristic is a problem-solving strategy or shortcut that is often used to make quick judgments or decisions. An algorithm is a step-by-step procedure or set of instructions that can be followed to solve a problem or complete a task.