some people believe that attending class in university should be required, while others believe that it should be optional. which point of view do you agree with? use details and examples to support your explanation.

25 in 30

The first reason takes a longer time. Better to keep balance:

first 1-2 sentences: introduction. my opinion: A or B. agree or disagree. about 5-10 seconds
First, reason 1 and the example: about 15 seconds
Second, reason 2 and the example: about 15 seconds
Third, reason 3 (optional)
Conclusion: one sentence.(optional)