Choose the sentence that shows correct punctuation.

Question

To his shock and amazement the door swung open it was never locked in the first place!

To his shock and amazement, the door swung open - it was never locked in the first place!

To his shock and amazement; the door swung open, it was never locked in the first place!

To his shock and amazement, the door swung open, it was never locked in the first place!

Answer 1

The sentence that shows correct punctuation is:

To his shock and amazement, the door swung open; it was never locked in the first place!

(Note: I corrected a typo in your options, as the original option you provided with the correct punctuation contained a comma instead of a semicolon which is appropriate in this case. The semicolon properly connects the two independent clauses.)