plz help it's early and my day isn't going to well plz help.

Which of the following is a reason a scientist might do research?
A.) to collect data
B.) to test a hypothesis
C.) to attend a conference
D.) to make new observations

To cite a source is to ___.
A.) check if the information is reliable
B.) explain where the information came from
C.) rewrite the information in your own words
D.) copy a small section of informatiom word-for-word

Which of these is often a reliable source of scientific information?
A.) a book
B.) a friend
C.) a procedure
D.) a hypothesis​