explaining net force\nfour children pull on the same stuffed toy at the same time, yet there is no net force…

Brief Explanations:

Net force is the vector - sum of all forces acting on an object. If the forces exerted by the four children on the stuffed toy are equal in magnitude and opposite in direction such that they cancel each other out (i.e., they are balanced forces), the vector sum of these forces (net force) will be zero.

Answer:

The forces exerted by the four children on the stuffed toy are balanced. That is, the magnitudes of the forces are equal and their directions are such that they cancel each other out, resulting in a net force of zero on the toy.