The answer is A towards your question.
initially they thought it might be a defect common to all the turret clocks so as you said B is the answer.
Have a great Day :)
Answer:
The first thing you could do is check their sources, see where their information is coming from. You can also check their information against a source you already know and trust. Even looking at the website name could be helpful.
A fact or situation that is observed to exist or happen, especially one whose cause or explanation is in question.
‘glaciers are interesting natural phenomena’
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2.A remarkable person or thing.
‘the band was a pop phenomenon just for their sales figures alone’
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3.Philosophy
The object of a person's perception.
‘No empirical phenomena seem to demand a notion of backward causation for our understanding of them.’
hope it helps you
