The best introduction to establish and introduce the claim about the need for cursive instruction in the classroom is:
B.
Computers, cell phones, and tablets have put a wealth of information at our fingertips. However, the use of these devices comes with a price. Keyboards and touch screens are making the practice of putting pen to paper outdated. In fact, the popularity of typing has caused some schools to stop teaching cursive writing to students. Many people argue that cursive is not needed in a world where most people type. But these people are ignoring the benefits that learning cursive provides students. Cursive is still used for many tasks, and learning cursive can help students improve other skills.
This paragraph effectively introduces the debate regarding cursive writing in a modern, digital world while highlighting the ongoing relevance and benefits of learning cursive.