Niayesh99
Crows, herring gulls, and sparrows all live on the island of Firsten. Crows feed on sparrow eggs and therefore pose a threat to the sparrow population. Although gulls are not nearly as good at finding sparrow nests as crows are, sparrows typically also lose some eggs to gull predation. Nevertheless, sparrows that nest near gull nests tend to lose fewer eggs to predators than sparrows nesting far away from gull nests, since ____
Which of the following most logically completes the argument?A. the presence of gulls frightens away Crows
B. crows pose no threat to adult sparrows
C. gulls find sparrow nests by watching female sparrows enter the nest
D. there are far more crows on Firsten than there are sparrows
E. sparrows on Firsten typically hide their nests very carefully
So, on the island of Firsten, crows eat sparrow eggs which threatens the sparrow population. Gulls also eat sparrow eggs but are not as good at finding their nests as crows are. However, sparrows nesting near gull nests tend to lose fewer eggs than those far away from them. To complete the argument, we need to find a reason why this is the case.
Option A says that the presence of gulls frightens away crows. This explains why sparrows nesting near gull nests lose fewer eggs, as the crows are less likely to prey on their eggs when they are afraid of the gulls. This option makes sense and completes the argument logically.
Option B, C, D, and E do not provide any explanation for why sparrows nesting near gull nests lose fewer eggs. Therefore, they are not the correct answers.