Respuesta :
The first one. It is saying that lots of people in America are helping out the country in many different ways.
Answer:
“I hear America singing, the varied carols I hear,”
Explanation:
This is the line that best conveys the idea that many people contribute to the well-being of America. The author tells us that she hears America singing. This "singing" refers to the daily operations of the country. Moreover, she tells us that all these songs she hears are extremely varied. The variety is a reference to the fact that American people are very diverse, and that a huge variety of different people contribute to the country.