Below is a risk matrix for an entrepreneurial project in air conditioning installation and maintenance:

| Risk | Probability | Impact | Severity |
|--------|--------------|---------|-----------|
| Delay in delivery of materials | High | Medium | High |
| Lack of qualified labor | Medium | High | High |
| Changes in environmental regulations | Low | High | Medium |
| Competition in the market | High | Medium | High |
| Service quality problems | Medium | High | High |
| Increase in input prices | Medium | Medium | Medium |

Based on this matrix, it can be concluded that the most critical risks are the delay in the delivery of materials and competition in the market, since they have a high probability of occurring and a severe impact on the project. Therefore, preventive and contingency measures must be taken to. WHAT IS THE DESITION TREE?