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I really wish you provided the research study. I would be happy to answer. It should be attached to wherever you found this question. Hope this helps :)
Mathematics was the tool which scientists used to prove their theories and ideas. Mathematics was able to prove whether an idea a certain scientists had was correct or whether it was wrong. With this they wre able to advance the field very rapidly.
Hey! I believe the word you are looking for is 'mood.' Have a great day!
Answer:
mining activities, C is the answer
