What are the two questions about map scales?

Question 1: The relationship between map distances and the corresponding ground distances is represented by the?
The correct answer is B. Scale. Scale defines the ratio between a distance on the map and the actual distance on the ground.

Question 2: When a map of 1:50000 is enlarged by half, its new scale becomes?
When a map is enlarged, the features appear larger, meaning the scale number (denominator) decreases. If it's enlarged by half, it means the map is effectively 1.5 times larger in linear dimensions, or more commonly in map context, the scale denominator is reduced by half, making the map twice as large.