Sorry, but I disagree with the published answer to QOD#1.  Design standards 
require it BECAUSE (C) It helps in the manufacturing process.  The design 
standards require things for a reason, therefore, the reason it is required 
is the most correct answer, therefore, C is the most correct answer.

I hope the "most correct answer" format is not followed in the entire 
certification test.  It is too judgemental and often a play on words 
(reserved for politicians).

However, keep up with the QOD, it caused us to think and provides insight as 
to what we may expect should we decide to take the test.

thanks

gary ...