Is it B ?
imo.. base gives electrons and acids accept electrons right? in h20.. oh- was giving electrons to h+ but when h- gets added.. h- gives the electrons instead of oh- since its a stronger base.. so h2 forms instead of h2o.. and oh- remains unchanged
Simply,it can be explained with the help of bronsted- Lowry acid base concept which tells us that strong base will take H+ from water and remains in the Solution.
So,Hydride ions are stronger base which means they will react with water to form hydroxide ion and water which will remains in the solution.
So,option will be correct.
Sorry in above option b) will be correct as I forgot to mention there.