The correct option for the blank is "are you sure these are <u>John's and Elizabeth's </u> shops."
<h3>What is a phrasal verb?</h3>
Phrasal verbs are those that contain a phrase with a verb or preposition. Phrasal verbs are the combination of two words that makes a word. For example, pick up means grab or lift.
Thus, the correct option is d. John's and Elizabeth's.
