1

Problem

The chemical composition of Jupiter’s atmosphere is relatively well-known due to the observations made by the Galileo atmospheric probe in 1995. The ratios of helium to hydrogen and phosphorus to hydrogen in Jupiter’s atmosphere are relatively close to the same ratios for the Sun. However, for other elements, Jupiter’s atmosphere has a much greater abundance: the ratio of nitrogen to hydrogen in Jupiter is about 3.5 times as great as that of the Sun; carbon to____and krypton to hydrogen, 2.7 times as great.

Which choice completes the text so that it conforms to the conventions of Standard English?

2

Clue

The change in the punctuation especially, commas, in the CHOICES, is analyzed.

3

Hint

Elements, Comma, Comparison pattern is followed to rule out the right answer.

4

Sumup

Please summarize steps

Choices

6

Choice-A

Choice A is incorrect because It lacks punctuation after "hydrogen." A comma or other appropriate punctuation is needed to separate "hydrogen" from the numerical expression that follows to maintain clarity and grammatical correctness.

Wrong hydrogen 2.9 times as great;

7

Choice-B

Choice B is incorrect because it lacks a semicolon or colon after "great," which is typically used before introducing an explanation or list. This disrupts the flow of the sentence.

Wrong hydrogen, 2.9 times as great,

8

Choice-C

Choice C is incorrect because it lacks punctuation after "hydrogen.

Wrong hydrogen 2.9 times as great,

9

Choice-D

Choice D is correct because it uses proper punctuation to separate the introductory clause from the numerical comparison that follows, adhering to the conventions of Standard English.

Correct hydrogen, 2.9 times as great;

10

Step

The text with the most logical and precise phrase - hydrogen, 2.9 times as great;

11

Answer

Option

D

12

Sumup

Please summarize choices