DNA h as em erged a s a po tential w ay to store digita mation in rece nt year s, - it come s with a significant problem: th e mole cule is so fragile that individ ual DN A stra nd s rapidly degrad e. A) like wise B) for ins tanc e C) on the contr ary D) yet E) furtherm ore

## Step 1<br />The problem is a multiple-choice question that tests your understanding of English conjunctions. The sentence given is "DNA has emerged as a potential way to store digitization in recent years, - it comes with a significant problem: the molecule is so fragile that individual DNA strands rapidly degrade." The blank in the sentence needs to be filled with a conjunction that logically connects the two ideas.<br /><br />## Step 2<br />The first part of the sentence talks about the potential of DNA to store digitization. The second part of the sentence introduces a problem related to DNA. The conjunction needed should introduce a contrast or contradiction between the two ideas.<br /><br />## Step 3<br />Looking at the options, "on the contrary" is the conjunction that best fits the context. It introduces a contrast between the potential of DNA and the problem it presents.