Answer:
4 feet 5 inches
Explanation:
Lacy is the tallest of them all. She is 4 feet and 12 inches tall (5 feet). Next to her is Jamal, who is 4 feet and 10 inches tall. He is followed by Ben who is 4 feet and 5 inches tall. The shortest of them all is Zach, who is 2 inches shorter than Ben (4 feet and 3 inches tall). Getting the answer is easier if you present it in a diagram.
Tallest to shortest: Lacy, Jamal, Ben and Zach.