David Douglas was a British botanist. He was born in Scone, Perth, Scotland, in 1798. Douglas worked in the Glasgow botanical gardens. Then he came to the United States to work as a collector for the British Royal Horticultural Society. During the time he was in the U.S., he discovered more than 150 varieties of native American plants and trees. He introduced all of them into England. The Douglas fir and the Douglas squirrel were named after this botanist.
from Microsoft Encyclopedia 2003
Q.The tone of this paragraph could best be described as
A.formal.
B.sarcastic.
C.entertaining.
D.playful.