High confining pressure on a rock body leads to what kind of deformation

fracturing that is a ductile deformation.

Explanation:

The ductile deformations are characterized by the extreme force of the pressures and the strains that are applied to the rocks when they are pressurized and overburdened by the ricks and that they act as compressive force that has led to the formation of the formation if a mountain systems, as a result, the body squeeze in shape and the rock behaves plastically.