The MOST common discipline technique for a child's misbehavior that North American parents use with preschool children is:

A) blaming themselves.
B) reasoning and disappointment.
C) time-outs.
D) removing children's playthings.

Time-outs are the most common discipline technique used by North American parents with preschool children. This involves temporarily removing the child from the situation where the misbehavior occurred to a designated time-out spot for a short period of time. It is an effective way to create a consequence for the misbehavior without resorting to physical punishment or negative verbal responses.