Item — sat-dog

Hard Reading and Writing · Information and Ideas · None · MCQ

Many scientific discoveries have been made by accident—while scientists were studying one thing, they stumbled upon something else entirely. One such example involves the discovery of penicillin, a powerful antibiotic that revolutionized medicine, by Alexander Fleming. While studying bacteria in 1928, Fleming left a petri dish of bacteria uncovered in a lab. When he returned, Fleming observed that a mold had grown in the dish, and that, surprisingly, the bacteria surrounding the mold had died. The discovery of penicillin provides a powerful illustration of how ______.

Which choice most logically completes the text above?

A
an unexpected discovery can be the result of scientific inquiry.
B
scientific discoveries are often made in controlled laboratory settings.
C
researchers must carefully control their experiments to ensure accurate results.
D
the scientific method is the only reliable way to make new discoveries.

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