Answer: d. flowchart proof
A logical argument that is presented in graphical form using boxes and arrows is called a flowchart proof.
Step-by-step explanation:
Flow chart is a diagrammatic representation of step-by-step procedure or system or a set of logical instructions made up of using boxes and arrows, which each have different functions.
Therefore, A logical argument that is presented in graphical form using boxes and arrows is called a flowchart proof.
