What is the error in the question pls ans fast

What sentence correctly uses it’s underlined relative pronoun?

Which is easier to identify direct or indirect characterization? why

Each pair of sentences can be combined to create one compound sentence. determine which choice best combines them. refinishing furniture is a creative hobby. not everyone loves to scour garage sales to find old items. going to flea markets can you to notice unique qualities in used items. beauty can be found where you least expect it. specialized equipment can make the refinishing process easier. painting the furniture can be creative with the right tools. some people like refinishing old furniture. others prefer buying new items.