Explanation:

1st CLI Resolution
copy " C:\Program Files\Testing\msvcp100.dll " " User-PC02\C$\Windows\System32 " /v /y
2nd CLI Resolution
regsvr32 msvcp100.dll
Why These Are the Correct Choices (Exam Logic)
Why the COPY command is first
The error explicitly states MSVCP100.dll is missing
Other users can run the app # the DLL exists on another system
The fastest, least disruptive fix (preferred by CompTIA) is to:
Copy the known-good DLL into C:\Windows\System32
The /v switch verifies the copy, and /y suppresses prompts - both are enterprise-safe defaults This restores the missing runtime dependency immediately.
Why REGSVR32 is second
After copying a DLL, Windows may not recognize or properly load it
regsvr32 registers the DLL with the operating system
This ensures:
The Testing application can properly call the runtime library
The fix persists after reboot