When are effects that depend on one or more other effects applied?

The correct answer is that effects that depend on one or more other effects are applied just after the effect they depend on is applied.

In Magic: The Gathering, when an effect is dependent on another, it means that the second effect relies on the resolution of the first one. For instance, if a spell or ability states that it has additional effects based on whether another spell has resolved previously, that dependent effect will only be considered valid and applied after the original effect has fully resolved. This ensures that the game state has been updated with the results of the first effect before any subsequent changes are made based on its outcomes.

Other options suggest different timings or methods for applying dependent effects. When examining the phrasing in those alternatives, it's clear they do not align with the comprehensive rules governing how effects interact and resolve within the game context. In Magic, maintaining a strict order of operations is crucial, ensuring clarity in which effects are evaluated and applied based on their dependencies.