Final answer:
A decision grid is a visual and quantitative method of decision making that allows data to be graphed for easy interpretation. It helps in objectively evaluating options based on their relative importance and assists with selecting the best course of action.
Step-by-step explanation:
A decision grid is a visual and quantitative method of decision making. It allows data to be graphed for easy interpretation by creating a table with criteria along one axis and options along the other axis. The decision maker assigns weights to each criterion and rates each option on those criteria. This method helps in objectively evaluating options based on their relative importance and can assist with selecting the best course of action.