NaOH, as ionic bonding is between Na+ cation and OH- anion, but within the OH- anion there is covalent bonding between O and H.

NaOH. There are ionic bonds between the positively-charged Na ion and the negatively-charged OH ion. At the same time, there are covalent bonds between O and H within the OH ion.

It has to be Sodium Hydroxide as it is the only one with metal in it. Which is required during ionic bonding.