How do magnetic stripes show the history of Earth's magnetic field? O A. As you move eastward along a continent, rocks get older.
B. As you move down through the seafloor, rocks get older.
C. As you move away from a coast, the rocks get younger.
O D. As you move away from an ocean ridge, the rocks get older.

Many organizations release indexes used to measure the development of the world's countries. as we learned in this lesson, these indexes measure many factors, from life expectancy to happiness. in your opinion, what are the three most important factors we can use to determine how developed a country might be? explain your answers in a few sentences.