Soru

Zorluk: KolayPunctuation of Nonessential Elements

In 2006, the International Astronomical Union officially reclassified Pluto as a dwarf planet. This decision ______ sparked widespread debate among scientists and the public alike, many of whom had grown fond of the distant icy world. Ultimately, the reclassification helped astronomers establish a clearer definition for what constitutes a true planet in our solar system.

Which choice completes the text with the most logical and grammatically correct punctuation?

  1. A
    , which altered our understanding of the solar system—
  2. —which altered our understanding of the solar system—Cevap
  3. C
    —which altered our understanding of the solar system,
  4. D
    which altered our understanding of the solar system—

Cevap

The phrase starting with an em dash and ending with an em dash correctly punctuates the nonessential relative clause.
The correct answer correctly uses matching em dashes to set off the nonessential relative clause, which is necessary to maintain punctuation symmetry in the sentence.

Adım Adım Çözüm

1
Identify the nonessential element in the target sentence.
The clause 'which altered our understanding of the solar system' is nonessential because removing it leaves the main sentence grammatically complete and coherent.
Nonessential elements must be set off from the rest of the sentence using matching punctuation marks.
2
Evaluate the punctuation surrounding the nonessential element in the options.
To correctly set off the clause, the punctuation marks at the start and the end must match (e.g., two commas, two em dashes, or parentheses).
Mixing different punctuation marks (such as a comma and an em dash) creates grammatically incorrect asymmetry.
3
Select the option that uses a matching pair of punctuation marks.
The option that begins and ends the clause with an em dash is the only choice that maintains punctuation symmetry.
This correctly integrates the nonessential clause into the sentence without creating structural asymmetry.

Anahtar Kavram

Punctuation of Nonessential Elements
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