DNA h as em erge d as a p ot ential w ay to sto re digit al infor mation in rece nt year s, - It c omes with a significa nt problem ; the mole cule is s o fragile that ual DN A stran ds rap idly degrad e. A) lik ewise B) for ins tanc e C) on the cont rary D) yet E) furth ermo re

## 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 digital information in recent years, - It comes with a significant problem; the molecule is so fragile that actual DNA strands rapidly degrade."<br /><br />## Step 2<br />The sentence is discussing the potential of DNA to store digital information, but it also introduces a problem. The conjunction needed should be able to introduce a contrast or contradiction.<br /><br />## Step 3<br />Looking at the options, we can eliminate 'A) likewise' and 'B) for instance' as they do not introduce a contrast or contradiction. 'C) on the contrary' could potentially fit, but it is not the best choice as it introduces a complete reversal of the previous statement, which is not the case here.<br /><br />## Step 4<br />'D) yet' and 'E) furthermore' are left. 'E) furthermore' is used to add more information, not to contrast. 'D) yet' is used to introduce a contrast or contradiction, which is what we need in this case.