Add A Comma After Lifeguards

According to water safety experts and lifeguards, people, who don't know how to swim, or who can't swim well should never swim alone at an unguarded beach.
Selected Answer:
b. Remove the comma after people
Answers:
a. Remove the comma after lifeguards
b. Remove the comma after people
c. Remove the comma after people and the comma after swim
d. Remove the comma after swim and add a comma after well
Question 2
"I don't like to see people who are in positions of power being mean to those around them," said Jerry Dunn a chemical engineer.
Selected Answer:
d. Add a comma after Dunn
Answers:
a. Add a comma after people
b. Add commas after people and after power
c. Change the comma after them to a period
d. Add a comma after Dunn
Question 3
Selected Answer:
d. Remove the comma after mower
Answers:
a. Remove the comma after soon
b. Remove the comma after car
c. Remove the comma after blower
d. Remove the comma after mower
Question 4
Without ever looking at his notes, the commencement speaker said, "not to speak without listening."
Selected Answer:
a. Remove the comma after notes
Answers:
a. Remove the comma after notes
b. Add a comma after speaker
c. Remove the comma after said
d. Add a comma after to
Question 5
The baby arrived in April, 2006 and was crawling within five months, walking within 10 months, and talking before she turned a year old.
Selected Answer:
b. Add a comma after 2006
Answers:
a. Remove the comma after April
b. Add a comma after 2006
c. Add commas after arrived and after 2006
d. Remove the comma after 10 months
Question 6
When Dan lived in Austin, Texas, he used to watch bats from the famous, bat colony fly over beautiful Town Lake each evening at dusk.
Selected Answer:
c. Remove the comma after famous
Answers:
a. Remove the commas after Austin and after Texas
b. Remove the comma after Texas
c. Remove the comma after famous
d. Add a comma after beautiful
Question