A passage reads: 'Monarch butterflies travel up to 3,000 miles during migration. They use the sun as a compass. They follow the same routes their ancestors used.' What is the main idea?
-
A
Monarchs use the sun to find directions.
-
B
Monarch butterflies are remarkable long-distance migrators.
-
C
Butterflies follow paths their ancestors traveled.
-
D
Monarch migration covers 3,000 miles each year.