Answer (C) is correct . Flowcharts illustrate in pictorial fashion the flow of data, documents, and/or operations in a system. Flowcharts may summarize a system or present great detail, e.g., as found in program flowcharts. According to the American National Standards Institute, the diamond-shaped symbol represents a decision point or test of a condition in a program flowchart, that is, the point at which a determination must be made as to which logic path (branch) to follow. The diamond is also sometimes used in systems flowcharts.
Answer (A) is incorrect because The rectangle is the appropriate symbol for a process or a single step in a procedure or program.
Answer (B) is incorrect because A terminal display is signified by a symbol similar to the shape of a cathode ray tube.
Answer (D) is incorrect because A predefined processing step is represented by a rectangle with double lines on either side.
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