According to Bronsted-Lowry acid concept an acid is a that donate a proton" and a base is a "proton acceptor."so will look for that molecule to which <span>H2O</span> "donates" H+to become <span>OH−</span>. so answer will be.. . <span>NH3+H2O→NH+4+O<span>H<span>− so correct option is NH3 hope it helps</span></span></span>
