Electricity may be generated by a wire:

ANS:D - passing through a flux field

Why you are differentiating the flow of electrons and Current,

All are similar just we are using the different terms, don't confuse yourself. I will explain in simple terms, change of flux induces EMF (in terms of Volt) i.e. is nothing but a flow of electrons or current and it also happens in vice-versa.

For further clarification please refer Faraday's law.