Does listening to Mozart really stimulate the mind?

I’ve heard about studies where listening specifically to Mozart helps stimulate the mind. I’m a little confused. Why Mozart? Why not someone else? What quality of music is specifically in Mozart’s music that stimulates the mind? Does ALL of his music stimulate the mind? His operas? His sonatas? His symphonies?

Secondly, but probably most importantly, how does it stimulate the mind to begin with? As in, what’s going to happen to your mind if you listen to "Mozart" more?

What are the major difference between Mozart's work and Brahms' work?

I noticed that Mozart’s Quartet for Piano and Strings in E-flat Major, K 493 and Brahms’s Quartet for Piano and Strings in c-minor, Opus 60 both used only piano, violin,viola and cello to preformed the piece.
What is the difference between those two pieces? Besides one is in major the other one is in minor.
How was the Mozart quartet consider "classical"?
and what style was the Brahms?

What soap opera has a plot where the characters Valerie and James are involved in an incestuous relationship?

Valerie’s mothers name is Margaret, and apparently Valerie and James were in a relationship (about to get married, actually) when Valerie finds out that James is her brother and her mother Margaret had been keeping that from her. I’m doing a scene involving this in my theater class and it’s apparently from a real soap opera. I’m just curious to see which one it’s from.