Non-Restrictive Elements and Punctuation

That show is on late * which is why I usually don't watch it.

• no comma
• comma after late
• comma after show
• comma after why

I think MODERN FAMILY is hilarious * which is why I never miss an episode.

• comma after hilarious
• no comma
• comma after why
• comma after miss

The car * that I chose * gets almost 50 mpg on the highway.

• comma after gets
• comma after mpg
• comma after car and after chose 
• no commas

That's our favorite restaurant * which is why we go there often.

• no commas
• comma after favorite
• comma after restaurant
• comma after why

We had the trees * that were downed in the hurricane* removed.

• comma after hurricane
• no commas
• commas after trees and hurricane
• comma after hurricane

The belief * that you can drive safely and text at the same time * is a myth.

• commas after belief and time
• comma after time
• comma after belief
• no commas

We'd like to thank all the people * who helped out with the fundraiser.

• no commas
• comma after people
• commas after people and out
• comma after thank

The children * who live up the street * are quite friendly.

• commas after children and street
• comma after street
• no commas
• comma after children

The tire * that is flat * has always given me trouble.

• commas after tire and flat
• no commas
• comma after tire
• comma after flat

The woman * who found my missing purse * is now my close friend.

• no commas
• comma after woman
• comma after purse
• commas after woman and purse