The correct answer is A. The author admires Diane’s high-quality impressions and castings.
Step-by-step explanation:
In this text, the author explains how Diane makes an impression or casting of a cat's tongue, which is a preparation for doing an impression on a tiger. About this, it can be concluded the general attitude of the author is admiration because he refers positively to Diane's work and effort. This is seen in "once again, she was able to produce an amazingly detailed impression" or in "It included all the spines" because these details show how the author believes Diane's work is high -uality and precise. According to this, "the author admires Diane’s high-quality impressions and castings".