Out of the given alternatives given choose the most appropriate option.
This must not happen again, __________ you will be dismissed.

Correct option is A

The correct option to fill in the blank is (a) or.
• Explanation:
– The sentence presents a condition with a consequence: if something doesn't happen, a negative result will follow.
– "Or" is the correct coordinating conjunction to show such a conditional threat.
• Grammatical rule used:
– Use "or" to connect two ideas when one is a consequence or condition of the other, especially when a warning or threat is implied.
• Explanation in Hindi:
– जब कोई विकल्प या चेतावनी देनी हो, तब "or" का प्रयोग किया जाता है जैसे – ऐसा नहीं किया तो वैसा होगा।
• Example:
– Follow the instructions, or you will be penalized. ✅
Meanings of the other options:
• (b) but ❌
– English: Used to show contrast between two ideas.
– Hindi: लेकिन
• (c) and ❌
– English: Used to add or join similar ideas.
– Hindi: और
• (d) so ❌
– English: Indicates result or consequence (not suitable with warnings).
– Hindi: इसलिए