Sentence A: "My birthday falls on the third of September."

• Status: Correct. We always use "the" before ordinal numbers like first, second, or third.

Sentence B: "I hope to return by the 3 o'clock train."

• Status: Correct. Use "the" here because you are talking about one specific, scheduled train, not just any train.

Sentence C: "Malayalam is a language of Kerala."

• Status: Correct. Even though it is the main language, using "a" is grammatically fine because it implies it is one of the various languages spoken in that region.

Sentence D: "A Daniel comes to judgement."

• Status: Incorrect. This sentence breaks a fundamental grammar rule. In English, we do not put the article "a" or "an" before a proper name (like Daniel). While this is a famous quote from Shakespeare, it uses a poetic exception rather than a standard grammar rule. Because it treats a person's name like a common noun, it is considered the "incorrect" usage in a grammar test.