Final answer:
Concept screening and concept scoring are used to select the best design concept for a product in the concept selection phase.
Step-by-step explanation:
In the concept selection phase, concept screening and concept scoring stages are used to select the best design concept for a product.
Concept screening involves evaluating each concept to see if it meets the constraints and eliminating concepts that do not meet the criteria.
Concept scoring involves comparing the remaining concepts using criteria to determine the best concept according to the established constraints.