They didnot understand their situation in life,
Answer: Derive
Explanation:
In this sentence the incorrect verb is derives and the correct one is derive.
Derive is considering transitional verb and the meaning of it is, for example, to receive or to take something from some source which in this case is correct since in sentence we have that something is derived from the source, in this case, hand-operated devices and other.
I'm not completely shore but i would choose C.
