What is the minimum number of markers to identify a contaminated area?

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Multiple Choice

What is the minimum number of markers to identify a contaminated area?

Explanation:
To identify a contaminated area you need a boundary, not just a point or a line. One marker marks only a point, which doesn’t define an area. Two markers create a line, still not enclosing anything. With three markers you can form a closed boundary (like a triangle), which clearly delineates the contaminated zone for responders and helps prevent confusion or accidentally entering the area. So the minimum number to enclose and identify the area is three.

To identify a contaminated area you need a boundary, not just a point or a line. One marker marks only a point, which doesn’t define an area. Two markers create a line, still not enclosing anything. With three markers you can form a closed boundary (like a triangle), which clearly delineates the contaminated zone for responders and helps prevent confusion or accidentally entering the area. So the minimum number to enclose and identify the area is three.

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