Which of the following is a common form of literary conflict?

The choice of "Man vs. Machine" as a common form of literary conflict reflects a well-established category in literature where characters confront challenges posed by machines or technology. This conflict often explores themes of humanity versus automation, the moral implications of technology, and the potential for machines to either enhance or diminish human existence.

This form of conflict is prominent in various genres, particularly in science fiction, where individuals struggle against artificial intelligence or robotic entities gaining autonomy. Works like "Metropolis" or "The Matrix" illustrate this tension vividly, raising questions about control, identity, and the very nature of what it means to be human.

The other options, while they suggest intriguing forms of conflict, are not as widely recognized or commonly categorized in the same way. "Man vs. Idealism" and "Man vs. Perception" imply struggles with internal beliefs and subjective viewpoints, which, although significant, are less frequently articulated as primary conflicts in the traditional literary sense compared to the more tangible and external confrontations seen in "Man vs. Machine." "Man vs. Innovation," similarly, can suggest a clash with new ideas or practices but does not encapsulate the core struggle found in many narrative forms as effectively as the chosen conflict.