Why does the author include this paragraph at the end
of the book? Check the three answers that apply.
So, where did I find my facts and figures? In lots of
different places. Tracking down information about black
holes was a little like tracking black holes themselves. It
took research, questions, and lots of cross-checking to
piece together something that made sense. Then again, it
was a lot easier for me to track down information than it
is for astronomers to locate black holes--thanks to high-
quality Internet resources and helpful librarians, such as
Jeffrey Mehigan and Debbie Batson. Luckily I was able to
find what I wanted without special X-ray detectors.
-A Black Hole Is Not a Hole,
Carolyn Cinami DeCristofano
I to show that it takes research to write an
informational book
to show her appreciation to the librarians who
helped her
to finish the book with a joke
to recognize the role of the internet in her research
to discourage others from attempting to write an
informational book

c, to compete

apartheid, (afrikaans: “apartness”) policy that governed relations between south africa's white minority and nonwhite majority and sanctioned racial segregation and political and economic discrimination against nonwhites. people should not get this wrong. i was just answering a question.

when world war i broke out across europe in 1914, president woodrow wilson proclaimed the united states would remain neutral, and many americans supported this policy of nonintervention. however, public opinion about neutrality started to change after the sinking of the british ocean liner lusitania by a german u-boat in 1915; almost 2,000 people perished, including 128 americans. along with news of the zimmerman telegram threatening an alliance between germany and mexico, wilson asked congress for a declaration of war against germany. the u.s. officially entered the conflict on april 6, 1917.

the most famous of all the units fighting in cuba, the "rough riders" was the name given to the first u.s. volunteer cavalry under the leadership of theodore roosevelt. roosevelt resigned his position as assistant secretary of the navy in may 1898 to join the volunteer cavalry. the original plan for this unit called for filling it with men from the indian territory, new mexico, arizona, and oklahoma. however, once roosevelt joined the group, it quickly became the place for a mix of troops ranging from ivy league athletes to glee-club singers to texas rangers and indians.