Which of the following most completely states the central idea of the passage?
a.
mark twain was an extremely productive and influential writer of humor and satire.
b.
the life of mark twain is remembered fondly by his readers as well as his critics.
c.
mark twain wrote many stories and essays about his impressions of life in the south.
d.
the life of mark twain was marked by good and bad periods that influenced his writing.