Refine second meaning: which option captures its sense?

• A. To purify; to take impurities out of something
• B. To confuse
• C. To make changes in order to improve something
• D. To degrade or ruin

Answer: (C)

Multiple meanings of refine are tested here, specifically the sense that means to make changes in order to improve something. This usage appears when you refine a plan, a process, or a product—you tweak details, polish steps, and sharpen outcomes to raise quality. That’s why this option best fits the second meaning, as it centers on improvement through modification. The sense of refine as removing impurities describes purification, which is a different meaning, not the one asked for. The other choices don’t fit because they describe confusion or degradation, neither of which aligns with refining to enhance.