Which of the following is the best reason for sandbox testing in change management?

Sandbox testing provides an isolated, secure environment where proposed changes can be thoroughly tested and evaluated without affecting production systems or data. This allows administrators to identify potential issues, verify functionality, and assess the change's impact and stability before it is deployed to the live environment, ensuring minimal disruption and risk.

Obtaining end-user acceptance typically occurs during user acceptance testing (UAT) or involves communication, which is distinct from the technical evaluation within a sandbox environment.

Determining the affected systems is part of the initial planning and impact analysis phase of change management, not the primary purpose of sandbox testing itself, though sandbox testing can confirm the extent of impact.

Selecting a change owner is an administrative task within the change management process, unrelated to the technical testing performed in a sandbox environment.