Digital PSAT Reading and Writing Practice Question 252: Answer and Explanation
Question: 252
Among many discoveries, the Voyager 2 spacecraft ________________volcanic activity— the first time another astronomical body was found to have this Earth-like characteristic.
Which choice completes the text so that it conforms to the conventions of Standard English?
- A. found that Io a moon of Jupiter has
- B. found that Io, a moon of Jupiter has
- C. found that Io, a moon of Jupiter, has
- D. found that Io a moon, of Jupiter has
Correct Answer: C
Explanation:
C. The commas correctly surround the clarification of what Io is. This is known as an “appositive,” which is when an interchangeable name for what comes before is surrounded with commas. For example: “My oldest daughter, the Prime Minster, is well respected.” The other options do not provide sufficient pauses.
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