Question Bank / Reading and Writing / Boundaries
Boundaries SAT question
Reading and Writing · Standard English Conventions · Medium · Answer it here, explanation included.
A study led by scientist Rebecca Kirby at the University of Wisconsin–Madison found that black bears that eat human food before hibernation have increased levels of a rare carbon isotope, blank due to the higher 13C levels in corn and cane sugar. Bears with these elevated levels were also found to have much shorter hibernation periods on average.
Which choice completes the text so that it conforms to the conventions of Standard English?
ExplanationShow
Choice D is the best answer. The convention being tested is the punctuation of a supplementary element within a sentence. The comma after “(13C)” pairs with the comma after “isotope” to separate the supplementary element “carbon-13 (13C)” from the rest of the sentence. This supplementary element defines the “rare carbon isotope,” and the pair of commas indicates that this element could be removed without affecting the grammatical coherence of the sentence.
Choice A is incorrect because it fails to use appropriate punctuation to separate the supplementary element “carbon-13 (13C)” from the rest of the sentence. Choice B is incorrect because it fails to use appropriate punctuation to separate the supplementary element “carbon-13 (13C)” from the rest of the sentence. Choice C is incorrect because it fails to use appropriate punctuation to separate the supplementary element “carbon-13 (13C)” from the rest of the sentence. The comma after “carbon-13” isn’t necessary because the parentheses around “13C” already separate this element from the rest of the sentence.
Drill this skill on Aceit
Adaptive practice, a daily plan, and score tracking take a free account so we can save your work.
More Boundaries questions
- Generations of mystery and horror ______ have been influenced by the dark, gothic stories of celebrated American author Edgar Allan Poe (1809–1849).
- The Mission 66 initiative, which was approved by Congress in 1956, represented a major investment in the infrastructure of overburdened national ______ it prioritized physical impr
- A recent study tracked the number of bee species present in twenty-seven New York apple orchards over a ten-year period. ______ found that when wild growth near an orchard was clea
- The haiku-like poems of Tomas Tranströmer, which present nature- and dream-influenced images in crisp, spare language, have earned the Swedish poet praise from leading contemporary
- While one requires oxygen and one does ______ and anaerobic respiration are both forms of cellular respiration—that is, they are processes by which cells break down glucose to use
- To serve local families during the Great Depression, innovative New York City librarian Pura Belpré offered storytelling in both English and Spanish, an uncommon ______ celebrated