Question #N55

The following text is adapted from a book about a 19th-century American explorer. The explorer traveled through a region of the United States and kept a journal about his journey. The explorer wrote, “I’ve seen more of this country in the last three months, than I have in all my life. ” Which choice best maintains the style and tone of the passage?

Which choice best replaces the underlined portion?
A. then I have in my whole life.
B. then I’ve seen in my whole life.
C. as I have in my whole life.
D. than I’ve seen in my whole life.