In the following question, two statements and five connectors are given. Only one of the connectors from those given can be used to combine the given two statements into one sentence without changing the meaning. Choose that connector as your answer.
I. Fermi did not think that such tiny wisps of matter could ever be detected directly.
II. No one else thought that such tiny wisps of matter could ever be detected directly.

Statement I talks about 'Fermi's opinion about direct detection of wisps of matter'; statement II talks about 'no one other than Fermi' having the same opinion. It is also noticed that both these statements are negative. Thus, a connector is needed that can connect the subjects 'Fermi' and 'no one else' - and still result in a negative sentence.. Clearly, option (b) is the only valid choice here; its use [with a few modifications viz. 'no one' replaced with 'anyone' (as 'nor' already conveys the negative sense, so another negative word 'no one' replaced with 'anyone'); eliminating the predicate ('did not.. detected directly') in statement I) results in - 'Neither nor anyone else thought that such tiny wisps of matter could ever be detected directly.' - a perfectly meaningful sentence. Hence, option b) is correct.