In 1915, chemist Alice Ball pioneered a groundbreaking technique to make chaulmoogra oil injectable, offering hope to thousands of leprosy patients. Her innovative process ______ involved chemically modifying the oil's fatty acids so they could be easily dissolved in water and absorbed by the human body.
Which choice completes the text so that it conforms to the conventions of Standard English?
- A, which became known as the Ball Method
- B—which became known as the Ball Method,
- , which became known as the Ball Method,Cevap
- Dwhich became known as the Ball Method,
Cevap
The correct option is the one that sets off the nonessential relative clause with matching commas: ', which became known as the Ball Method,'
The sentence contains a nonessential relative clause, 'which became known as the Ball Method,' that describes the 'innovative process.' Nonessential elements must be set off from the rest of the sentence with matching punctuation marks at both the beginning and the end of the phrase. The correct choice uses a comma at the beginning of the clause and a matching comma at the end of the clause, properly isolating the nonessential information.
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Anahtar Kavram
Punctuation of Nonessential Elements
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