A square symbols
A. defines a source or destination of system data
B. identifies data flow
C. represents a process that transforms incoming data flow(s) into outgoing data flows
D. is a data store-data at rest, or a temporary repository of data
E. None of the above
Answer: Option A

The correct answer is C. represents a process that transforms incoming data flow(s) into outgoing data flows.
A square symbol in the flowchart represents a process that transforms incoming data flow into outgoing data flows.