C most logically completes the passage ?
Machine operators are often responsible for repair of their machines. The more dependable a machine is, however, the less dependable is its human operator's performance in repairing occasional malfunctions of the machine, since ____
An automatic machine(As we can depend more on it)~
Less Human Interaction with it ~ The user/operator can't repaire when it malfunctions
The underlying part is the key reason & must be after 'since'
A. as machines increasingly incorporate computerized components, the diagnosis and reconstruction of failed parts is being supplanted by the substitution of new parts in repairing the machines.
Wrong.It doesn't explain why its operator can't substitute the new part?B. the more complex a piece of machinery is, the more automatic control functions will be built into it, reducing the need for human monitoring.
It doesn't explain during the malfunction timeC. as the dependability of machines increases, those operating the machines get less practice in handling malfunctions.
CorrectD. the less frequently a machine malfunctions, the more attention its operator will ;pay to its repair
Out of scopeE. in addition to repairing their machines after malfunction, machine operators are often responsible for regularly scheduled maintenance of their machines.
Extra obligation when practically the operator is failing? Out of scope