Read the topic from Immigrant Kids by Russell Freedman.

Immigrant families worried about being torn apart from one another.

Which quotation best develops this topic?

“we lived there for three days - Mother and we five children, the youngest of whom was three years old”
“my first impressions of the New World will always remain etched in my memory”
“scowling and gesturing, they pushed and pulled the passengers, herding us into separate groups”
“clustered on the foredeck for fear of separation and looked with wonder on this miraculous land of our dreams”

“scowling and gesturing, they pushed and pulled the passengers, herding us into separate groups”

The quotation that best develops the topic of immigrant families being torn apart is: "scowling and gesturing, they pushed and pulled the passengers, herding us into separate groups."

The quotation that best develops the topic of immigrant families worrying about being torn apart is: "scowling and gesturing, they pushed and pulled the passengers, herding us into separate groups." This quotation highlights the fear and concern the immigrant families have about being separated from one another as they are forcibly divided into different groups.

To arrive at this answer, I examined each quotation and looked for the one that specifically captures the idea of families being torn apart. The first quotation mentions the number of children and their ages, but it does not explicitly address the fear of separation. The second quotation references the author's first impressions, but it does not directly connect to the topic of families being torn apart. The fourth quotation describes the passengers looking with wonder at the new land but does not directly address the topic of being torn apart.

In contrast, the third quotation vividly describes how the passengers are pushed, pulled, and herded into separate groups, which conveys their fear and worry about being separated. Therefore, this quotation best develops the topic.