Step-by-step explanation:
The reason why it's not A is because you need a comma after ACE Hardware, the second to last thing in a list with commas.
It's not B because "person's" is a typo. "Person's" means belonging to one person. It should be "people" because the sentence is talking about multiple people.
The difference between C and D is "that" and "which." D is right because you use "that" when talking about singular things and "which" is multiple, so it's
Answer:
D Hardware stores which people in the United States frequently visit include Lowes, Home Depot, ACE Hardware, and even Walmart may be considered.
Hope this helped :)