Help it’s multiple choice 11 through 15 please!

What changes occur in the brain during the teenage years? 25 points, someone me out!a.) thinking becomes slower as the brain grows larger. b.) connections between neurons become stronger and faster. c.) unused neurons fuse together to form larger, better functioning neurons. d.) more neurons are developed.

Is the portion of the electromagnetic spectrum that has a frequency just above that of visible light.

Which substance partical has negligible massand travels around outsidethe nucleus