A: The bicycle is 80% assembled in the box. Some assembly will be required.
A: 33.5" from top of seat to floor at lowest position.
A: It might be a little too tall for a person at 5'. It is better suited for someone 5'2" to 5'7"
A: THe Northstar 26" is a perfect choice based on age and size.
A: Frame size is listed on the Target ad as 18.5
A: A 26 inch will work but you would be better off with a 27.5 wheeled bike.
A: Someone of that height would be better off with a 27.5, 29" or 700c wheeled bicycle
A: If purchased in store it can be assembled. If purchased online it comes 85% assembled. The front wheel, handlebar, seat and pedals have to be installed. Brakes and gears will need to be adjusted.