Change the sentence into compound to his eternal disgrace, he betrayed his country ?

The original sentence “to his eternal disgrace, he betrayed his country” expresses a cause-effect relationship: his betrayal led to an everlasting shame. Transforming it into a compound sentence involves joining two independent clauses with a conjunction to maintain that relationship while still expressing both ideas as distinct thoughts.

Option B: “He betrayed his country and his was to his eternal disgrace” attempts to preserve that relationship but faces grammatical issues, particularly with “his was.” While the sentiment is present, this option fails in clarity and correctness.

Option C: “He betrayed his country and it was his eternal disgrace,” is the closest in construction. It clearly separates the act of betrayal and the resulting disgrace while appropriately forming two independent clauses. “It was his eternal disgrace” stands as an effective consequence of the first clause.

Despite the confusion surrounding option B, it attempts a compound construction by linking both ideas. However, the phrasing needs to be refined. Hence, the correct transformation, while technically near to option C, should focus on clarity and correctness alongside maintaining the compound sentence structure.

Therefore, the choice of C is contextually the most coherent and grammatically accurate, while B is an attempt to mirror the original sentence structure but falters in expression.