Thecontrol structuresare the building blocks of a program or software development that are used to manage the flow of execution within a program. The correct answer is d) Action structure.These structures are used to design the structure of programs and decide the order in which the instructions are executed in a program. The control structures used in programming are selection, repetition, and sequence structures, and the correct option that is not a control structure is d)Action structure.The action structure is not a recognized control structure because it does not control the flow of instructions in the program.  Instead, it is a group of statements that performs a specific task in the program. Inprogramming, control structures are used to determine the flow of control, meaning the order of execution of statements in a program.Sequence structurerefers to the execution of statements in sequential order, Selection structure uses if-else or switch statements, while repetition structure (loops) execute statements repeatedly. Hence, the correct answer is d) Action structure.know more aboutcontrol structuresbrainly.com/question/33439009#SPJ11...

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