Concept:The diamond shape in a flowchart shows a point where the program must make a decision or check a condition.
Explanation:Flowcharts use different symbols for different actions in a process.
Input and output are shown by a parallelogram.
A rectangle represents a process or a calculation.
The diamond symbol is used for a decision.
At this point, the flow branches into different paths, usually based on a "Yes" or "No" condition.
The diamond symbol does not represent a comment, a connector, or input/output.
Answer:C. decision