Using the context clues in the sentence. You can accurately determine the meaning of the word onerous. The sentence starts off with stating a 10 - page research project. That would most likely be tedious and hard. So the best answer choice is answer C. Difficult
What are the options tho? And what book is this?
In some areas it does not rain for 9 years straight.
Making time to do your work and trying to get the right answers, studying and turning things in early or on time, making sure everything is complete
