This statement is false.
Any time a writer paraphrases something he or she read somewhere, it means that he or she is paraphrasing somebody else's words, which means that person has to be credited for it. If the writer reached an opinion independently, then they wouldn't have to cite the source, but otherwise, they do, if they want to avoid plagiarism.
In the given sentence "We are waiting your feedback soon", the words that make the sentence incorrect is the word "soon", and it lacks the word "for" after the word "waiting". The correct sentence should be: We are waiting for your feedback. The use of the word "soon" contradicts the verb tense used in the sentence.
I think the answer is option "D" I hope this helped :)
please tell me if im correct