To prepare a pure sample of n-hexane using sodium metal as one reactant, the other reactant or reactants will be:
2CH3CH2CH2Brn−propyl(bromide)+2Na Ether⟶ CH3−CH2−CH2−CH2−CH2−CH3+2NaBrn−Hexane
This is Wurtz reaction.
The reaction forms R-R' , so it is possible to use Options 1 and 2 to form hexane.
But those 2 can also form a number of other products, which is not feasible.