The correct answer is option 4: 2, 1, 4, 3.

To better understand the order of their evolution, let`s dissect each option:

Option 1: 1, 2, 3, 4

This option suggests that amphibians evolved first, followed by fish, then reptiles, and finally, birds. However, this is incorrect because fish actually evolved before amphibians.

Option 2: 1, 3, 2, 4

According to this option, amphibians evolved first, followed by reptiles, then fish, and finally, birds. This is also incorrect because fish evolved before reptiles.

Option 3: 4, 1, 3, 2

This option suggests that birds evolved first, followed by amphibians, then reptiles, and finally, fish. This is incorrect because fish evolved before amphibians.

Option 4: 2, 1, 4, 3

This is the correct option. Fish evolved first, followed by amphibians, then birds, and finally, reptiles. This order correctly represents the evolutionary timeline of these four groups.