Explanation
Solution
Step 1: Identify the orientation of Road K series
Since A,B,C,D,E are parallel and involve East/West directions, they are Vertical (North-South) roads.
Since F,G,H,I,J,K,L,M are parallel and involve North/South directions, they are Horizontal (East-West) roads.
Step 2: Map the Vertical positions (North to South)
Let's establish the relative North-South positions of the horizontal roads based on the given conditions:
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From the prompt's specific condition: K is 1/2 km South of J.
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From the main text: I is 1 km North of J.
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From the prompt's specific condition: K is 1 km North of G.
Step 3: Combine the sequence (North to South)
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Top: Road I
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(Gap of 1 km)
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Road J
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(Gap of 1/2 km)
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Road K
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(Gap of 1 km)
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Road G
Step 4: Verify the distances
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Distance between I and K: 1 km(I to J)+1/2 km(J to K)=1.5 km
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Distance between J and G: 1/2 km(J to K)+1 km(K to G)=1.5 km
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Distance between I and G: 1 km+1/2 km+1 km=2.5 km
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Distance between J and K: Given directly as 1/2 km South of J.
Conclusion:
The roads J and K are exactly 1/2 km apart.
Correct Option: 4 (J and K)