D because the plot always needs to be shown whether directly or indirectly
A scientific theory is when a theory is tested, well-substantiated, unifying explanation for a set of verified, proven factors. A theory is always backed up with evidence. A hypothesis is only a suggested outcome and it's testable and falsifiable.
Hope this is what you wanted ^.^
But I feel like I didn't
I feel that C. is definitely one of the answers. D. might also be an answer.
From my opinion, it is always highly recommended that we must know a second language always for better understanding of sake. There are a lots of advantages of learning a second language rather than our regular spoken language. Having a second language helps us to develop more problem solving skills, analytical techniques, critical thinking, improved memory and understanding new grammatical rules and vocabulary. Knowing a second language makes us more enough confident and intelligent than others. Suppose for example, we are traveling to a different country or region in which we are not familiar with their language spoken there i.e it may be (French, Spanish, Italian, Mexican..) then we'll be definitely trying using translator devices. Rather than these occupations, knowing a second language helps to understand better and identify their culture and tradition even more deep. This helps to develop mutual understanding between the people whom we talk in their language and we get to know and understand things even more better. It will also help us to travel in any corner of the world too without any fear of languages. So do try to learn new language is the best and epic hack and life skill which lasts long forever!
