The correct answer is D. Continuing for a long time
Answer:
Here's some examples, you can switch it up or around to how you see fit
Explanation:
She was rather envious, while her sister was warmhearted.
One of the sisters was envious and cold, and (or while) the other was warmhearted and kind.
Her sister was envious, but she was warmhearted.
Hi !!
It's a compound complex sentence
Although Mary isn't fond of reading makes it = complex (dependent clause)
she read Harper Lee's To Kill a Mockingbird, and she found it fascinating = compound (2 independent clauses)
hope I helped !
There was no plane evidence or pieces of the plane found.