The Highland region is the region of Scotland that had the most inaccuracies in its earliest geologic maps.
A geologic maps refers to a map that shows the distribution of materials such as Rock, mountains etc at or near the Earth's surface.
Hence, the Highland region is the region of Scotland that had the most inaccuracies in its earliest geologic maps because of the mountainous presence.
Therefore, the Option D is correct.
Read more about geologic maps
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