The correct option is this: WRITING IS DIFFICULT BECAUSE SO MANY SKILLS ARE INVOLVED.
A topic sentence refers to the sentence which expresses the main idea of the paragraph in which it occurs. The topic sentence is usually the opening sentence in the paragraph; the other sentences in the paragraph just serve to support the topic sentence.
C because all of Shakespeares writing at least within romeo and juliet alone was iambic pentameter if you look how it is written you can see it follows that same standard.
answer: for sandwich its a proposition, because conjunctions are just a transition word, and interjections are very similar to conjunction
