Question

what is the best closing for the passage?

o a. young people need to develop more important skills than being able to text at 60 words per minute. smartphone technology is nice, but it should not rob us of interacting with people face - to - face or keeping our bodies structurally sound.

o b. in addition to physical problems that result from constant texting and scrolling, some people believe that serious health problems may result from the phones radio waves. because there are too many unknowns regarding smartphone technology and teenagers, we should limit teenage access to these devices until more conclusive studies have been done.

o c. while the technology at our fingertips is amazing, the consequences from long - term use of these devices may be too much to justify their benefit. limiting teenage access to smartphone technology is a wise and advantageous idea.

o d. there is just too much unknown about the consequences of long - term use with these devices. from carpal tunnel syndrome to more serious health problems, we could be embarking on a smartphone plague that rivals the flu epidemic of the early twentieth century. therefore, teenagers should have limited access to smartphones until we know more about the consequences.

Explanation:

• Option A only focuses on skills and face - to - face interaction, not comprehensively addressing the long - term consequences and access limitation.
• Option B mentions physical problems and radio waves, but the connection between unknowns and access limitation is not as well - rounded as needed.
• Option C is a bit too simplistic in stating the idea without elaborating on the various consequences like option D.
• Option D first states the unknowns about long - term use consequences (from carpal tunnel to serious health problems), then makes a strong case for limiting teenage access to smartphones until more is known, which is a comprehensive and logical closing.

Answer:

D. There is just too much unknown about the consequences of long - term use with these devices. From carpal tunnel syndrome to more serious health problems, we could be embarking on a smartphone plague that rivals the flu epidemic of the early twentieth century. Therefore, teenagers should have limited access to smartphones until we know more about the consequences.