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: 1.9c

Answer

(E) - It is an experiment made by Chang.

Work Step by Step

After hypothesising that his house salad needs a new dressing in order to improve the sales, Chang conducted an experiment in which he prepared four bowls of lettuce with four new, different dressings.
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