Lines and points are both undefined terms in geometry.
The diagram that represents the postulate is line (c)
The given postulate states that:
Exactly one line exists between any two points.
This means that:
The line must pass through the two points.
From the given options (see attachment)'
Only option (c) is true
Because the line passes through points A and B.
Hence, the diagram that supports the postulate is line (c).
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