Which detail from "At School" supports the central idea that foreign-born children were not given enough meaningful support at school in the early 1900s?

Question

They were simply placed in regular classes with much younger American-born children.
Instruction emphasized the three Rs, American history and geography, penmanship, and spelling.
Students stood at their desks as they performed physical fitness exercises every morning.
In some city schools, nearly all the students came from immigrant families.
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Answer 1

The detail that best supports the central idea that foreign-born children were not given enough meaningful support at school in the early 1900s is:

They were simply placed in regular classes with much younger American-born children.

This detail highlights the lack of appropriate educational resources and support tailored to the needs of foreign-born children, which underscores the central idea.