Explanation:

The correct answer is option 'C' - try to know the reason. When a student comes late to class, it is important for the teacher to understand the reason behind their tardiness before taking any further action. Here's a detailed explanation of why this option is the correct choice:

1. Importance of Understanding the Reason:
As an educator, it is essential to create a conducive and supportive learning environment for students. By trying to understand the reason behind the student's tardiness, the teacher demonstrates empathy and concern for their well-being. This approach helps foster a positive teacher-student relationship, which is crucial for effective learning.

2. Individual Circumstances:
Each student may have different reasons for arriving late to class. It could be due to personal issues, transportation problems, health concerns, or any other unforeseen circumstances. By taking the time to listen to the student's explanation, the teacher gains insight into their individual circumstances and can provide appropriate support.

3. Assessing Validity:
By engaging in a conversation with the late student, the teacher can assess the validity of their reason. While some students may genuinely have valid reasons, others may offer excuses. By actively listening and asking relevant questions, the teacher can determine the legitimacy of the student's explanation.

4. Identifying Patterns:
By consistently trying to understand the reasons behind a student's tardiness, a teacher can identify any patterns or recurring issues. For example, if a student frequently arrives late due to transportation problems, the teacher can work with the school administration or the student's parents to find a solution. This proactive approach helps address the underlying issues rather than simply punishing the student.

5. Supporting Student Success:
By understanding the reasons behind a student's tardiness, the teacher can provide appropriate support to help them succeed academically. For instance, if a student is struggling with time management, the teacher can offer guidance and strategies to improve their punctuality. This support contributes to the student's overall success and growth.

In conclusion, rather than immediately punishing a student for arriving late to class, it is important for a teacher to try to know the reason behind their tardiness. By doing so, the teacher can demonstrate empathy, understand individual circumstances, assess the validity of the reason, identify patterns, and provide appropriate support to foster student success.