Answer:
Earth's gravity is the main contributor to the water cycle.
You might unintentionally plagiarize information by not properly citing it.
Thwart: To oppose or prevent.
To thwart any outsiders from intruding, I built this wall made of broken bottles.
Buffy realized if the news of the scandal got out it would thwart her chances of becoming the president.
The example is B. sentence fragment
3. c
4.a
7. a
i hope this helped i was trying to read it