TroubleshootingCâu 83 / 100
In troubleshooting, why is it useful to change only one variable at a time?
a.It makes the process take longer for billing
b.It looks more professional
c.It lets you clearly identify which change fixed or affected the problem
d.It uses less electricity
Giải thích
Changing one variable at a time lets you isolate the exact cause of a problem and know which action produced a result. If you change several things at once, you cannot tell which one mattered. This disciplined approach leads to reliable, repeatable fixes.
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