Which sentence from this section best supports the conclusion that the great wall of china is no longer used for protection?

group of answer choices

1-between the 1700s and 1900s, the great wall became the most common symbol of china for the western world.

2-today, the great wall is considered one of the most amazing structures in the world.

3-over the years, roadways have been cut through the wall at various points.

4-the most well-known section of the great wall is badaling, located 43 miles northwest of beijing.