What happens in the fifth sublayer of layer 7 concerning continuous effects?

In the fifth sublayer of layer 7, which focuses on the modifications and interactions regarding power and toughness, effects that switch a creature's power and toughness are applied at this stage. This sublayer permits specific types of continuous effects that alter the characteristics of a creature in a more permanent sense, such as switching power and toughness values.

This is distinct from other modifications that take place in different sublayers. For example, modifying power and toughness by a specific amount is handled in the first sublayer of layer 7, while changes from counters are factored into later layers involving the components that adjust a creature's base statistics or perform specific modifications. Setting power or toughness to zero is also a distinct action that occurs in a different sublayer, reflecting a more drastic change rather than a direct switch of the values themselves.

Thus, the correct answer identifies the specific mechanism relevant to this sublayer, where the focus is on the direct action of switching the power and toughness of a creature rather than other forms of modification.