Final answer:
A test design technique is a process for selecting test cases which encompasses identifying criteria and constraints, prototyping, testing, evaluation, and refinement. It's an iterative process integral to ensuring that a design meets its intended objectives and constraints effectively.
Step-by-step explanation:
A test design technique is primarily A. A process for selecting test cases. The aim of test design techniques is to establish a set of test cases that are effective at evaluating the functionality and performance of a software product. The process incorporates various steps such as identifying criteria and constraints, prototyping, testing, evaluation, and refinement.
Testing evaluates whether the prototype meets all constraints and performs adequately according to the criteria. When testing and evaluation reveal weaknesses or opportunities for enhancement, the design may be refined to better fulfill the established requirements. This iterative testing and refinement is a core part of the spiral design process in engineering.
Lastly, if the initial design fails to meet the necessary criteria or constraints, the design team may select a different concept and repeat the testing and evaluation process. Essentially, test design techniques support the development and validation of a design that ultimately meets the specified objectives and constraints