C. She has wanted to move west for several years, and now he's taking her there.
Through many years of controversy with our late associates, the Northern States, we have vainly endeavored to secure tranquillity, and to obtain respect for the rights to which we were entitled.
The correct plural form of echo is echos or echoes. Either way it is grammarly correct. I believe that echoes is the correct form.
echoes
Plagiarism- taking the ideas or works of another and summiting it and claiming that he/ she produced it as an original piece of work. Example: performing a piece of music in band class, claiming he/she wrote it when it was written and published by another. Additionally, copying verbatim, or almost verbatim, from a website or other source, and inserting it into an essay or paper without proper citation is considered plagiaris
