Select the letter of the source one could use to locate the answer to the following question.

Question

What offices, elected or appointed, were held by John Quincy Adams before he became president?

A. Dictionary of American Biography
B. Americana Annual
C. The World Almanac and Book of Facts
D. Who's Who in America

Answer 1

How quaint -- book references! :-)

I'd definitely check the Dictionary of American Biography.

Answer 2

I was thinking the same. Thanks!!

Answer 3

I think the last Americana Annual was published about 20 years ago. I threw out
my ancient set of Americana Encyclopedias when I got on the internet, about 15 years ago.