Final answer:
The choice of transition word for sentence 6 depends on its context within the paragraph: 'finally' for the last point, 'instead' for an alternative, 'likewise' for agreement, and 'therefore' for a conclusion.
Step-by-step explanation:
To determine the correct transition word for the beginning of sentence 6, it is essential to understand the context in which it is being used. For instance, if sentence 6 is presenting the last point in a series or coming to a conclusion, then 'finally' might be appropriate. If it presents an alternative viewpoint or different option from the one just mentioned, 'instead' would be a suitable choice. If it is adding to or agreeing with the previous sentence, then 'likewise' is your best bet. However, if sentence 6 is concluding or deducing something because of information given in previous sentences, 'therefore' could be the right option.