Answer:
Formulate and devise. They both mean to create a plan of some sort, while all the other words have to relation to each other. Another trick is to put the words into sentences and see if they deliver the same message.
The correct answer is ten percent. If you use more, then you might get accused of plagiarism or of not saying anything your own at all.
I really dont know because i dont know who Natayla is but i will take a guess and say it is d
