Step 1: Understanding the Concept:
In the first row, "plant" is a broad category that includes many different things besides flowers, trees, shrubs, herbs, and so on, with flower being just one of them. The blank in the second row should be a similarly broad category that includes many different things besides houses.
Step 2: Key Formula or Approach:
For each option, check whether it is a broad category containing many different kinds of structures, houses among them, the same way plant contains many different kinds of living things, flowers among them.
Step 3: Detailed Explanation:
City and village are not categories that contain different kinds of structures, they are places made up of many houses together, so they describe a collection of the same kind of thing rather than a broader category of differing kinds.
Tent is simply another specific kind of shelter, sitting next to house rather than including it as one of several types.
Building, however, is a broad category that includes houses, flats, offices, shops and many other kinds of structures, with house being just one type among them, exactly as flower is one type among many within plant.
Step 4: Final Answer:
The word that completes the pattern is Building.