Discussion
Assertion (A): Recorder readouts are anchored to independently known events.
Reason (R): A wrong conversion factor typically yields a plausible rather than an obviously broken trace.
Select the correct answer from the options below.
Answer: C
Correct answer: Both A and R are true, and R is the correct explanation of A
Both are true and the second is why the anchoring is necessary. A wrong scaling factor does not produce nonsense: a gain error changes the amplitude while preserving the shape, and an offset shifts the whole trace - both look entirely plausible.
Only comparison with independently known events exposes them: radar returns, radio recordings, the documented times of actions. Errors that announced themselves would need no such check; it is precisely the plausible ones that make it essential.
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