It's not that good by an example can be...
Dear Diary,
I remember when I was 8 years old, my parents took me to the zoo for the first time. I was thrilled and amazed by how many different animals there were. I can still remember how fast my heart was beating, and how many times I got scolded for running off, because I wanted to see another creature such as a giraffe.
The next most exciting thing after entering the zoo was that I was allowed to pat a lion cub. It had golden fur which felt smooth to touch, and pointy whiskers that poked my skin. After that I had small pink bumps on my arms from the times when the cubs whiskers had poked me.
I loved that day so much that when it was finally time to leave I was reluctant to go and threw a small tantrum, which washed away when my parents promised to take me again. So, that visit to the zoo was the most memorable day of my life, because of how I felt.
Answer: Probably the sentence “They needed ways to move around in the city.
Explanation: The paragraph would be fine without the sentence.
I believe the answer you are looking for would be the second answer choice, "We read Shakespeare's tragedy, <em>Othello</em>, after reading two of his comedies."
This is because when information already speaking of something mentioned, is referred to to clarify a subject, it must be separated by commas. (that's how I remember)
ex: My mother, the queen, is placing a new law down to make everyone have equal rights.
ex: Today I went to Ms. Green's, the principal's, office.
As Morrie's body deteriorates, so does the condition of the hibiscus plant. The plant's pink petals wither and fall as Morrie grows increasingly dependent on his aides and on oxygen. As his death approaches, so does the death of the plant. It is continually used as a metaphor for Morrie's life and for life itself.
