1. Non-essential - A title usually is the result of hard work, therefore, it's not necessary to include that appositive phrase.
2. Essential - It tells you who the Keystone Corps are. Otherwise, you would have no idea.
3. It's non essential.
Saying how kind and sweet things she was
Roles of parking enforcement officer is very important because they enforce implementation of the law regarding parking and traffic rules. For without them, it would be very chaotic, nobody will remind the people that there rules to be followed to avoid conflicts.
Answer:
the first option, reviewing and changing sentence beginnings
Explanation:
Do you have pre-made sentences boo? Or do you need to create your own?