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Tablets Versus Textbooks

(1) The business world is becoming more and more digital every day. (2) Public education should follow suit and provide students with tablet computers. (3) Tablets are handheld devices with screens and controls built into single units. (4) Providing students with tablets increases their motivation to learn.
(5) On the other hand, studies show that most students divide their attention between multiple tasks while using digital devices. (6) Some teachers and parents are concerned that students will be distracted by games, apps, email, and Web sites while they are supposed to be learning. (7) The demands of our fast-paced society require people to multitask. (8) Giving students the opportunity to develop this skill will serve them well in the future.
(9) Another advantage of tablets is that they can hold hundreds of textbooks. (10) Also, they are lighter and sleeker than textbooks. (11) Students who use tablets do not have to carry a backpack full of heavy textbooks. (12) Additionally, schools do not need storage space for the e-textbooks.
(13) Furthermore, schools should use tablets because e-textbooks cost less than printed textbooks. (14) According to a 2012 report from the Federal Communications Commission (FCC), e-textbooks can save schools a minimum of $250 per student per year. (15) Although the initial cost of the tablets may be greater than printed textbooks, the e-textbooks will save districts money in the long run. (16) Overall, the benefits of using tablets instead of traditional textbooks are greater than the drawbacks. (17) Tablets encourage student learning, reduce the need for storage space, and cut school spending.

Choose the best place to add the following sentence.

Others argue that the cost of the tablets and the cost of repairing broken tablets outweigh the savings on textbooks.
A.
before sentence 8
B.
after sentence 3
C.
after sentence 11
D.
before sentence 15