In your essay give specific details and don't vague if it is not related to the topic you are writing about, is not important.
1. change they're to their
2. change an a
3. delete the comma after workhouse
4. add a comma after computer
5. change too to to
Incomplete question. However, here's the clearly written/completed question;
The dates listed in the works cited page indicate:
a. important years in Mandela’s life.
eventful years in the author’s life.
b. years in which the sources were published.
c. years in which the student conducted research.
Answer:
<u>b. years in which the sources were published.</u>
<u>Explanation:</u>
Remember, this is a <em><u>biography</u></em> written by someone to explain the life story of another, in this case Nelson Mandela.
Therefore, inorder for the information to be verifiable, it is quite important that the years in which the sources of the information that led to the published work on Mandela's life be mentioned.