The answer is C. This is because but is being used as a conjunction separating independent clauses in the other answers. You can remove but from A, B, and D, and you are left with 2 simple sentences.
I hope this helps!!!
I think it's the first option.
The firm had an excellent SAFETY record
That was very IRRESPONIBLE of you to do
They say the most important quality to become a teacher is PATIENCE
The country's economy needs a quick RECOVERY after the financial crisis
A mother would do anything to keep her child out of DANGER
Unfortunately, there were very few SURVIVORS after the train crash
It's SURPRISING that you failed the test after studying for weeks
It's illegal to phone the emergency services and give them UNTRUTHFUL information
This is a hard one and I can see why you decided to post it here. B is most definitely wrong but the other three are all neck and neck. There are both even pros and cons of A and C but I think it would be more reasonable to adopt a general routine. So I think the answer would be C.
Answer:
A good introuduction ( start by hooking the reader), Make it descpriptive but no overboard, dont stray from your topic, and check an punction and grammar, ( I suggest Grammarly)
HOPE THIS HELPS!!!!!!!!!!