Most autobiographies convey
a. a sorrowful tone.
b. the significance of fame.
c. flashbacks of events.
d. a significant message or lesson.

The most probable answer here I tihnk is C - flasback of events. 

An autobiography isn't suppose to convery a sorrowful tone, so this answer is surerly not correct. 

Some autobiographies might convey significance of fame in certain ways, however, that is not the main idea of what a autobiography is suppose to do. 

Some also might include a sigificant message or lesson. Again, however, that is not what an autobiography is supposed to be. 

The truly correct answer in this case is C - flashback of events, as an author is supposed to write relatively detailed descriptions of certain points in his life that he found to be important in his life :)

For the first one) know the subject yes yes yes yes yes

All of the above
a
b
c
d