Your height: 4'4" to 5'4" (132 to 163cm) approximatly (?).
Frame size = 17.75in/45cm
Comments:
Mountain Bikes: they are sturdy and designed to go everywhere including off-road. Good for rough riding. In general heavy and with deep thread tires slow on paved roads. Not good city bikes unless narrower and slick tires are installed.
10 speed: good to go just about everywhere except very steep hills. The range of different ratios are more than enough for most people. There are 2 front chain rings and 5 rear gears. - Derailleur: Shimano SIS
Tires 26 x 1.90: wide tires, deep thread, all terrain.