Your question is Round Manhole Covers. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Strange Question - Why are manhole covers round?
Explain your reasoning clearly. You may discuss practical, engineering, safety, manufacturing, or maintenance considerations, but state your assumptions and distinguish the strongest reasons from secondary benefits. The interviewer is assessing how you approach an unfamiliar question, organize possibilities, and communicate a concise conclusion. A strong response should avoid guessing what answer the interviewer wants, identify the primary safety rationale, and acknowledge that multiple factors may contribute.