Question

because an achiral molecule is symmetrical, flipping it yields a structurally identical molecule. a flipped chiral molecule, ______ can be compared to a glove that has been turned inside out: it produces a structurally inverted molecule rather than an identical one. which choice completes the text with the most logical transition? choose 1 answer: a in other words, b for example, c by contrast, d similarly,

Explanation:

The text first talks about achiral molecules (symmetrical, flipping gives identical molecule) and then about chiral molecules (flipping gives inverted molecule). There is a contrast. "By contrast" is used to show a difference. "In other words" is for restating, "for example" is for giving an instance (but here it's a contrast not an example), "similarly" is for showing similarity (but there is a difference here).

Answer:

C. by contrast,