Final answer:
A flowchart is the tool used for a visual, step-by-step representation of a process, with clear indications of activities and decision points.
Step-by-step explanation:
The tool that is a step-by-step pictorial representation of activities and decision points in a work process is known as a flowchart. A flowchart is a graphical tool that depicts the sequence of steps in a process and is used to illustrate the flow of tasks, decisions, and operations. It shows how the process starts, the actions that need to be taken, where decisions are made, and how it all links together. This can be extremely beneficial for identifying potential bottlenecks, inefficiencies, or areas for improvement. Comparatively, a Gantt chart is a scheduling tool, a Pareto chart is used to prioritize problems and focus on the most significant factors, and a histogram is a graph that represents the frequency of occurrence of data within certain ranges. A flowchart's utility for depicting process flows is evidenced, for instance, in unit conversions where logical steps are visually mapped out.
A step-by-step pictorial representation of activities and decision points in a work process is called a flowchart. Flowcharts are graphical diagrams that use various symbols to represent different activities, decisions, and connectors, helping to visualize the sequence of operations in a process. They are commonly used in project management, software development, and process improvement.