Final answer:
A structured decision process is used to evaluate and prioritize each design idea, with tools like Cost Benefit Analysis helping to weigh the pros and cons of each option.
Step-by-step explanation:
The tool used to make decisions by evaluating and prioritizing each design idea or option is a structured decision process. This involves comparing design concepts against a set of established criteria and constraints to determine which concept is the most viable. A common technique used within this process is a Cost Benefit Analysis, which weighs the costs against the benefits of each option on a T shaped chart. To aid in decision-making, factors such as cost, functionality, sustainability, and compliance with constraints are evaluated, often assigning a numerical value or score to each factor.
Another part of the process is to brainstorm alternative solutions, where a variety of ideas are explored, followed by the selection of a design concept that meets the requirements best. After selection, testing and evaluation may lead to further refinement of the design or even the selection of an alternative concept if the initial choice proves unsuitable.