Parts of the given sentence have been given as options. One of them may contain a grammatical error. Select the option that has the error. If there is no error, select ‘No error’.
We cannot postpone discussion on this issue although it is urgent.

Correct option is D

Option (d) contains the grammatical error.
Explanation: The conjunction "although" is used to show contrast, and in this sentence, it incorrectly implies that the issue is urgent but does not warrant postponement. The correct conjunction to use here is "because," which correctly indicates that the discussion cannot be postponed due to the urgency of the issue.
Correct Sentence: We cannot postpone discussion on this issue because it is urgent.
Grammatical rule used: The conjunction "because" is used to give a reason or cause, which is appropriate in this context to explain why the discussion cannot be postponed.
Example: We need to act quickly because time is running out.