uan and Rita are having trouble with new employees Peters and Jackson, indicating which of the four targeted areas of change is most needed?

Changing people

Explanation:

The targeted area of change mostly needed is change in people. The idea here is to change attitude, motivation and effect new behaviors. Since Juan and Rita are having problems with the new employees the targeted area that they need mostly is changing people. As this aspect would bring about a resolution to the issues they are having with the new employees.