Students should learn to write well by hand because it is essential to learning and brain development. The precise movements required to write something by hand help younger students learn their letters. Older students will benefit from the way that handwriting assists in the actual writing process. Research has demonstrated that good, clear handwriting is directly linked to well-written papers. Moreover, writing by hand forces us to simultaneously think, move our hands, and feel the pen and paper. All this synchronized action spurs our brains to develop more as we handwrite more.

What underlying assumption is this argument based on?
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A. that students are using keyboards to write more and more often

B. that there has been a dramatic decline in well-written papers in school

C. that the world was better before technology changed how people write

A. that students are using keyboards to write more and more often