Question #3 on the quiz “Mom’s Favorite TV Shows” does not ask the question you think it does.
The question: “In what U.S. city have moms been watching this character practice medicine for over twenty years on “Grey’s Anatomy”?”
As written, the question is asking “In what city are the moms who have been this character …”
Based on the correct answer given, as well as the info in the question note, your quiz writer is trying to ask, "In what city has this character practiced medicine for over 20 years on “Grey’s Anatomy?”
There is no need for the phrase “have moms been watching.” It adds confusion to the question, and adds unnecessary words to a quiz already titled “Mom’s Favorite TV Shows.”