Which combination of fixtures represents the minimum for classifying as a family dwelling?

• A. 2 Kitchen Sinks, 1 Lavatory, 1 Water Closet, 1 Bathtub
• B. 1 Kitchen Sink, 2 Lavatories, 1 Water Closet, 1 Bathtub
• C. 1 Kitchen Sink, 1 Lavatory, 1 Water Closet, 1 Bathtub
• D. 1 Kitchen Sink, 1 Lavatory, 2 Water Closets, 1 Bathtub

Answer: (C)

The basic idea is that a family dwelling must provide four essential plumbing functions: a kitchen sink for cooking and cleanup, a lavatory for handwashing, a water closet for sanitation, and a bathing facility (bathtub). To meet the minimum classification, you need exactly one of each of these fixtures.

The composed set that shows the smallest, simplest configuration is one kitchen sink, one lavatory, one water closet, and one bathtub. It satisfies all four essential functions without adding extra fixtures. The other options still meet the four types but add extra fixtures (more than one sink, more than one lavatory, or more than one water closet), which goes beyond the minimum required. Thus, the minimal combination is the one with exactly one of each fixture.