Which sentence uses a comma in a way that is considered contested usage?

Question

Select two correct answers.
(1 point)
We are passing through New Orleans, Louisiana right before we stop in Houston, Texas.
Faith, Millie's best friend from summer camp, is coming to visit in a few weeks.
• Zagreb, Sarajevo, and Dubrovnik are all major cities in the Balkan region of eastern Europe.
Stephen did not understand the question, and so Gina tried to explain it to him more clearly.
Winston Churchill famously said, "It is not in our power to anticipate our destiny."

Answer 1

The sentences that use a comma in a way that is considered contested usage are:

1. We are passing through New Orleans, Louisiana right before we stop in Houston, Texas.
2. Stephen did not understand the question, and so Gina tried to explain it to him more clearly.

These sentences have commas that could be considered unnecessary or incorrect according to some style guides or rules of punctuation. The first sentence could be scrutinized for how the location is punctuated, while the second sentence contains an extra comma that some may argue is not needed before "and so."