Final answer:
The pair of compounds that are both members of the pair of ionic compounds is KBR and H₂O.
Step-by-step explanation:
Among the given options, the pair of compounds that are both members of the pair of ionic compounds is c. KBR and H₂O.
KBR, which stands for potassium bromide, is an ionic compound consisting of the cation K+ and the anion Br-. H₂O, which stands for water, is a covalent compound and not an ionic compound. So the correct answer is c. KBR and H₂O.