What function should you use to remove a playable and its inputs from a playable graph?

To remove a playable and its inputs from a playable graph, the correct function to use is DestroySubgraph. This function is specifically designed to not only remove the specified playable from the graph but also to ensure that all its input connections are properly disposed of, maintaining the integrity of the graph structure.

Using DestroySubgraph is essential when you want to manage the lifecycle of playables efficiently, particularly when dealing with complex graphs that might have various inputs and outputs. This function ensures that resources are cleaned up and that there are no lingering references to the removed playable, which could potentially lead to memory leaks or other performance issues.

In contrast, the other functions may not provide the same level of thoroughness when it comes to removing playables along with their inputs. Some might only remove the playable from the graph but leave the connections intact, which can lead to unexpected behavior if those inputs are still accessed or referenced elsewhere in the code.