Answer:
people
Step-by-step explanation:
There are four areas that are subject to change as the organization frequently tries to adjust to internal and external pressures. These four areas includes:
1. Strategy
2. People
3. Structure
4. Technology
However, in this case, it has been established that, Juan and Rita are having trouble with new employees Peters and Jackson, this is implies or indicates that areas of change is most needed is PEOPLE, because in this case, the problem is between people.