Explanation/Reference:
Explanation:
A. By default, 64-bit versions of Windows Vista and later versions of Windows will load a kernel- mode driver only if the kernel can verify the driver signature. However, this default behavior can be disabled to facilitate early driver development and non-automated testing.

Incorrect Answers:
B. specifies that Windows automatically restarts your computer when a failure occurs.
C. Developer would not be able to test the driver as needed.
D. Removes or repairs critical windows files, Developer would not be able to test the driver as needed and some file loss.
References: Installing Windows Server 2012.
https://technet.microsoft.com/en-us/library/jj134246.aspx
http://msdn.microsoft.com/en-us/library/windows/hardware/ff547565(v=vs.85).aspx