It is a challenge to attract adults for education and change their performance system because
1. they suffer from prejudice
2. they have work efficiency
3. they have personal achievements
4. their perception of knowledge varies
5. their perception mainly works
A. 1, 2, 3 and 5
B. 1, 2, 3 and 4
C. 1, 2, 4 and 5
D. 2, 3, 4 and 5
Answer: Option B
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