Question

writing a research - based argumentative essay about a debatable topic
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read the passage.
(1) does cell phone use lead to harmful effects from radiation? (2) many americans would love to know the answer, since cell phone use is at an - all - time high. (3) cell phone users abound, most are not well informed about the potential hazards associated with cell phones. (4) therefore, cell phones should come labeled with information regarding the dangers of using them.
which transition would be best to use at the beginning of sentence 3?
most importantly
in addition
although
therefore

Explanation:

• "Most importantly" is used to emphasize a key point. Here, sentence 3 is not the most crucial point in the overall argument.
• "In addition" is for adding extra information. Sentence 3 is not just an additional fact but rather a contrast - there are many cell phone users but they are not informed.
• "Although" is a subordinating conjunction that shows a contrast. Sentence 3 shows a contrast between the large number of cell phone users and their lack of information about hazards.
• "Therefore" is for showing a result. Sentence 3 is not a result of the previous sentences.

Answer:

Although