Which best describes the subject matter of computer science?

• A. How mental processes can work on machines, and how computers can effectively interact with humans
• B. The study of algorithms in nature
• C. Social impact of technology
• D. Economic models of software markets

Answer: (A)

Computer science centers on how information is processed by machines and how humans interact with those machines. This includes understanding algorithms, designing software, and exploring how computation can model problem solving and support human tasks. The other descriptions point to biology-inspired topics, societal effects, or market economics rather than the technical study of computation itself.