The correct option is A Na2SO4(aq) +2H2O(l)
NaOH is a base and H2SO4 is an acid. An acid reacts with a base to give salt and water. This type of reaction is known as neutralisation reaction.
Therefore, NaOH reacts with H2SO4 to produce Na2SO4 and H2O.
The chemical reaction is given below:
2NaOH(aq)+H2SO4(aq)→Na2SO4 (aq)+2H2O(l)