Which choice most effectively uses information from the given sentences to emphasize a difference between the eggs of the two species?
A
A 2017 study compared the lengths of eggs produced by an array of different bird species, such as Gygis alba and Gavia stellata.
B
A 2017 study found that Gygis alba eggs had an average length of 4.46 cm, whereas Gavia stellata eggs were longer, with an average length of 7.22 cm.
C
The bird species Gygis alba, which belongs to the order Charadriiformes, and Gavia stellata, of the order Gaviiformes, were included in a 2017 study that compared the average lengths of their eggs.
D
Mary Caswell Stoddard led a research study that determined the average lengths of eggs, including those of Gygis alba birds (4.46 cm) and Gavia stellata birds (7.22 cm).
Explanation
Correct answer: B.
Choice B is the best answer. The sentence emphasizes a difference between the eggs of the two species, directly contrasting the shorter average length of Gygis alba eggs (4.46 cm) with the longer average length of Gavia stellata eggs (7.22 cm).
Why the other choices are wrong
Choice A
Choice A is incorrect. While the sentence mentions both bird species, it doesn’t emphasize a difference between their eggs.
Choice C
Choice C is incorrect. While the sentence provides information about the two bird species, it doesn’t emphasize a difference between their eggs.
Choice D
Choice D is incorrect. While the sentence provides the average lengths of both species’ eggs, it doesn’t explicitly emphasize the difference between them.