Based on the provided process variants, I've identified 20 relevant questions that can help analyze the process. I've also assigned a confidence score for each question, ranging from 0.5 (low) to 0.9 (high), indicating the likelihood of the question being relevant and answerable based on the provided data.

1. What is the average time it takes for an employee to submit a declaration from start to finish? (Confidence: 0.8)
2. Which administrative approval step takes the longest to complete? (Confidence: 0.7)
3. What is the most common reason for rejections in the approval process? (Confidence: 0.6)
4. Can we reduce the number of rejections in the approval process? If so, what steps can we take? (Confidence: 0.8)
5. How many declarations are rejected by administration, and what is the subsequent re-submission rate? (Confidence: 0.7)
6. What is the efficiency of the payment handling process? (Confidence: 0.9)
7. Which budget owner has the highest approval rate for declarations? (Confidence: 0.6)
8. Are there any biases in the approval process? If so, can we identify and mitigate them? (Confidence: 0.5)
9. What is the impact of rejections on the overall process performance? (Confidence: 0.8)
10. Can we optimize the number of approvals required for a declaration? (Confidence: 0.7)
11. How do the different variants of the process affect the overall performance? (Confidence: 0.8)
12. What is the most common sequence of events leading to payment handling? (Confidence: 0.7)
13. Are there any correlation between the frequency and performance of each step? (Confidence: 0.6)
14. Can we identify any bottleneck steps in the process? If so, how can we alleviate them? (Confidence: 0.7)
15. What is the average cost of rejections in the approval process? (Confidence: 0.6)
16. How do different employees' submission rates and approval rates affect the overall process performance? (Confidence: 0.7)
17. Can we identify any differences in the approval rates between pre- approvers and budget owners? (Confidence: 0.6)
18. What is the impact