Choose the largest one from the presented scales and explain why: 1: 25000 1: 50000 1: 100000 1: 1000000

Scale is the change in the size of an object in relation to the original object.
The record itself means the ratio of the size of the copy to the original. In other words, how many times is the copy smaller than the original.
Let’s analyze the proposed scales:
1: 25000
less in 25,000;
1: 50,000
less than 50,000;
1: 100000
less than 100,000;
1: 1000000
less than 1,000,000.
Therefore, the largest item is 1: 25,000, and the smallest is 1: 1,000,000.
The greater the difference in size between the copy and the original, the larger the scale.
That is, the large scale is 1: 1,000,000.