Which term refers to smaller parts that make up a larger system?

• A. Pseudocode
• B. Sub-systems
• C. Flowchart
• D. Design

Answer: (B)

The idea here is that a large system is built from smaller, interacting parts called sub-systems. Each sub-system has its own function and can operate within the bigger system, contributing to the whole while keeping complexity manageable. This modular view makes design easier, testing more straightforward, and maintenance simpler because you can focus on one part at a time and still see how it fits with the rest. In contrast, pseudocode is just a written plan of an algorithm, a flowchart is a visual map of steps in a process, and design refers to the overall plan or blueprint. None of these pinpoint the actual smaller components that combine to form the entire system, whereas sub-systems specifically describe those pieces.