HELP FAST!!!!!
A good day for a bad decision

So the differences between those who seem to make good decisions and those who seem to make bad ones may be fewer than you think. In fact, if you study the people you think make only good decisions, you will likely find they also make some catastrophically bad ones as well. A person's ability to make a good decision increases with age and experience though we all develop at different rates. While you are young, you may want to take advantage of those around you with bigger cerebral cortexes: adults. Their advice may be just what is needed to counter your amygdala.

Which line from the text most clearly states the main idea of the fourth paragraph?
a.in essence, our emotion brains are growing spurts
b.our impulses are out of control at the same time our cerebral cortexes are not finished growing
c.as a result, teenagers feel overly emotional and wishy-washy when it comes to decisions
d.biologically, the teenage brain is not generally ready for adult decisions