Chemistry: An Introduction to General, Organic, and Biological Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0321908449
ISBN 13: 978-0-32190-844-5

Chapter 1 - Section 1.2 - Scientific Method: Thinking Like a Scientist - Questions and Problems - Page 6: 1.9a

Answer

(O) - It is an observation made by Chang.

Work Step by Step

Chang observed that the sales of the house salad had dropped.
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