The whole passage was about "Motown records" and their history of growth till date. That's what make interesting and the celebrities that these Motown Records featured. The other options like Music and history or research about the "Big Three" companies or someone interested in becoming like Lindsay Lohan. But the actual point of interest is people about the who are interested in developing a sound.
The sea has waves. They go up and crash back down. You can think of this as hard times. When you think your doing good and start rising to the top you often crash back down. This (the crash) leads to difficulties or troubled times.
Well it depends it would probably be even more boring. School would become more basic. The good thing is that the students would become more effective and efficient.
