Part A In "Conducting Solutions," why does the author most likely include the
information in paragraph 5?

A. to explain how solutions that contain ions conduct electricity
B. to show how some solutions low in ions can conduct electricity
C. to describe several ways to use solutions that conduct electricity
D. to list several solutions that are effective conductors of electricity

Part B

Which detail from paragraph 5 of "Conducting Solutions" best supports the
answer in Part A?

A. "This is what happens when ammonia and vinegar are mixed."
B. "An ammonia solution contains only a few ions, and it conducts electricity
only poorly."
c. "A vinegar solution also contains only a few ions and conducts only a little
electricity."
D. "But when these solutions are mixed, the ammonia reacts with the acid in
vinegar (acetic acid), and they form a lot of ions."