In a CALL operation, how is the child job completed prior to returning to the parent?

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Multiple Choice

In a CALL operation, how is the child job completed prior to returning to the parent?

Explanation:
When you call a subroutine, the controller saves the place to return and transfers control to the child. The child completes by either issuing a return signal (RET) or simply reaching its end (END). In either case, the controller uses that saved return point and resumes execution at the line immediately after the original CALL in the parent. A JMP would bypass the return path, a PULSE instruction doesn’t manage subroutine return, and ending the parent would terminate the whole program rather than just finishing the child.

When you call a subroutine, the controller saves the place to return and transfers control to the child. The child completes by either issuing a return signal (RET) or simply reaching its end (END). In either case, the controller uses that saved return point and resumes execution at the line immediately after the original CALL in the parent. A JMP would bypass the return path, a PULSE instruction doesn’t manage subroutine return, and ending the parent would terminate the whole program rather than just finishing the child.

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