Well, I'll say "Breakaway" by Kelly Clarkson as it sold more than three of the four albums listed combined (B'Day, BTW, Girl Like Me) but from the list, Oops!

21,breakaway and teenage dream should be on this :/

21. Nuff said

WHY WOULD U DO THAT

21 without a doubt...it completely ***** on teenage dream which I would say comes 2nd
#FACT

Under My Skin and Teenage Dream are better then all these tbh.

Where is Teenage Dream? Because that beats all the polll options.

Avril Lavigne: Under My Skin
but out of that list, LADY GAGA: The Fame Monster

Add Adele to the poll so she can slay once more.

UMS and Breakaway >>>

Carrie Underwood - Carnival Ride

Christina with Stripped.

so true.

The Fame Monster, so Gaga.

Breakaway & Under My Skin absolutly destroy these albums.