Final answer:
Testing is a fundamental part of Quality Assurance because it helps to reduce the risk of poor software quality by uncovering defects and ensuring the software behaves as expected. It verifies that the software meets requirements and adheres to quality standards, aiming to prevent defects from reaching the end-users.
Step-by-step explanation:
Testing can be an integral part of Quality Assurance (QA) because it serves to reduce the risk of poor software quality. During the QA process, testing is conducted to verify that the software meets the specified requirements and behaves as expected. By uncovering defects and ensuring that the software behaves correctly under various conditions, testing aims to prevent defects from reaching production where they can cause more significant issues.
Option B: Testing reduces the risk of poor software quality is the correct answer. This is because testing involves verifying that the software works as intended, which helps to minimize the risk of software failures and ensure a higher software quality. It's a proactive means to ensure that the final product will meet the users' needs and the organization's quality standards.
Option A and C are related to the overall QA process, while D is not a measure of software quality but rather a quantitative aspect of testing coverage. Quality of software cannot be determined solely by the number of executed test cases.