Answer:
Independent clause
I think
Their hard working laborious job
The sentence that contains an interjection is " Hurrah! I've finally found the answer." The correct answer is D. An interjection is an exclamation, in a part of speech.
the best answer would mostly likely be C bc it says "Kate my complain if the jug had been there". which means that they complain bout minor things, sorry if I got it wrong this is just from my opinion :)