The teacher ought to know the problems prevalent in the field of education. The reason is that

Only a teacher can do something about solving them
He can tell about the same to another teacher
Teachers can tell the government about it
With this knowledge, the teacher can have information about education

The correct answer is: D. With this knowledge, the teacher can have information about education.

A teacher ought to know the problems prevalent in the field of education because it will help them to be more effective in their teaching. By understanding the problems that students face, teachers can develop strategies to address them. Additionally, teachers can use their knowledge of the problems to advocate for change within the education system.

Option A is incorrect because it is not only teachers who can do something about solving the problems in education. Parents, administrators, and policymakers can also play a role in addressing these issues.

Option B is incorrect because it is not enough for a teacher to simply tell another teacher about the problems in education. Teachers need to take action to address these issues, and they can only do this if they have a good understanding of the problems.

Option C is incorrect because it is not the responsibility of teachers to tell the government about the problems in education. This is the responsibility of elected officials, who are accountable to the public.

In conclusion, the correct answer is: D. With this knowledge, the teacher can have information about education.