What technology refers to machines that perform human functions?

The correct answer is artificial intelligence. This technology encompasses the simulation of human intelligence processes by machines, particularly computer systems. Artificial intelligence can perform tasks that typically require human cognitive functions, such as understanding natural language, recognizing patterns, solving problems, and making decisions. While robotics involves machines that can perform tasks and may rely on artificial intelligence to enhance their functionality, it does not encompass the full scope of simulating human intelligence.

Automation refers to the technology that involves using control systems for operating equipment in various applications, including machinery and processes in factories or other environments, often without human intervention, but it does not specifically focus on mimicking human functions. Virtual reality, on the other hand, creates immersive digital environments but doesn't perform tasks like humans. Thus, artificial intelligence is the technology that best fits the description of machines performing human functions.