The main idea/thesis of the passage is Money appears to be very much on the minds of college freshmen, according to a recent survey of nearly 220,000 full-time freshmen at 300 colleges.
In America, a freshman is known to be a person or a student who is said to be in his/her first year at university or another known as college.
At college or university, they are students who are said to be in their first year of study.
Hence, The main idea/thesis of the passage is Money appears to be very much on the minds of college freshmen, according to a recent survey of nearly 220,000 full-time freshmen at 300 colleges.
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