Step 1: Understanding the Concept:
This question asks for the antonym of the given word.
Step 2: Key Formula or Approach:
Define the word "circuity." It comes from the word "circuitous," which means longer than the most direct way; roundabout, indirect. Circuity is the quality of being indirect.
Step 3: Detailed Explanation:
- We are looking for the word that means the quality of being direct.
- Option (A), "straightforwardness," means the quality of being direct and uncomplicated. This is a perfect antonym.
- The other options are unrelated: inventiveness (creativity), authenticity (genuineness), insightfulness (deep understanding), practicality (usefulness).
Step 4: Final Answer:
The opposite of circuity (indirectness) is straightforwardness (directness).