This is the 707th most frequent Danish word.
forklaring
Explanation.
In this sentence, 'forklaring' is used to describe a detailed elucidation provided by the teacher regarding an assignment.
Læreren gav en detaljeret forklaring af opgaven.
The teacher gave a detailed explanation of the task.
The word 'forklaring' in this context implies a justification or reason for a particular situation, namely the delay.
Jeg forventer en god forklaring for din forsinkelse.
I expect a good explanation for your delay.
Here, 'forklaring' refers to an explanation or clarification provided about a certain issue or problem.