The most appropriate synonym for "deliberate" is "planned." "Deliberate" refers to something done consciously and intentionally, and "planned" reflects the idea of careful forethought and intentionality. The other options, such as "casual" (informal), "hasty" (done quickly without much thought), and "rushed" (done in a hurry), have different meanings and do not convey the sense of careful consideration associated with "deliberate."

The most appropriate synonym for "magnify" is "expand." "Magnify" means to make something appear larger or more important, and "expand" aligns with the idea of increasing in size or significance. The other options, such as "magnanimous" (generous), "miniature" (smaller version), and "underemphasize" (reduce importance), have different meanings and do not capture the meaning of enlarging or making something appear larger.

"Assess" is the most appropriate synonym for "estimate" because both words involve making a judgment or approximation of the value, size, or extent of something. "Solve," "discover," and "believe" have different meanings and do not convey the idea of making an estimation or assessment.

An "apartment" is the most appropriate word for a set of rooms forming one residence in a building. The term "apartment" typically refers to a self-contained living space within a larger building or complex, and it is commonly used to describe a single unit within a residential structure. The other options, such as "suite," "villa," and "bungalow," may refer to different types of housing arrangements that may not necessarily involve multiple rooms forming one residence in a building.