The correct answer is option 2: 1 and 2. Let`s break down each option to understand the statements about tornadoes:

1. Tornadoes usually spin anticlockwise in the northern hemisphere: This statement is correct. In the northern hemisphere, tornadoes typically rotate counterclockwise due to the Coriolis effect. The Coriolis effect is caused by the rotation of the Earth and influences the motion of air masses, resulting in counterclockwise rotation.

2. Tornadoes usually spin clockwise in the southern hemisphere: This statement is incorrect. In the southern hemisphere, tornadoes typically rotate counterclockwise, similar to the northern hemisphere. This is because the Coriolis effect influences the rotation of tornadoes in both hemispheres.

3. This statement is not relevant to the question because it does not align with any of the given options.

4. This statement is not relevant to the question because it does not align with any of the given options.

Therefore, options 1 and 3 are incorrect, as the correct statements are that tornadoes usually spin anticlockwise in the northern hemisphere (1) and clockwise in the southern hemisphere (2).