You can select any backgrounds you like, however some are smaller than others. So here is a little list to help you decide. You can use smaller backgrounds for head shots.
Backgrounds that are perfect size for a large family portrait are:
Classic White
Classic Black
Classic Brown
Classic Red
Silver Sequins
Spring Garden
Wizard store front
Baseball
Easter
Santa's House (counts as two backgrounds)
Hot Cocoa
Love
Dark Room
Romantic Halloween
Fall Scene
Gray Floral
Backgrounds that are perfect for three subjects are:
cream
gray
green textured *not in pictures
sky *not in pictures
BoHo
Garage
Circus
Locker Room
Winter Trees *do not own a sleigh anymore
Backgrounds that are perfect for small children:
Dark Floral
Party
Flowers & balloons arch
Barn with lights
1st birthday pink or blue