Which verb means to change something completely, usually to improve it (noun: a transformation)?

• A. Transform
• B. Convert (into)
• C. Replace
• D. Extend

Answer: (A)

This item tests choosing a verb that communicates a thorough, complete change, usually with an improvement in mind. The best fit is transform because it conveys a total reshaping of something—the form, function, or appearance is changed so it becomes something different and typically better. The noun form transformation matches naturally, as in “a transformation of the system.”

Convert into suggests changing into another form or state, but isn’t inherently about complete overhaul or improvement. Replace means swapping the old for something new, which is not the same as changing the thing itself. Extend means to lengthen or widen, which is about size or duration rather than a fundamental change in nature.