Which command is used to postpone updating linked objects such as linked geometry and linked expressions?

The command used to postpone updating linked objects such as linked geometry and linked expressions is indeed referred to as "Delay Link Update." This command is specifically designed to allow users to work on their models without immediately processing the updates for all linked elements. By postponing updates, the user can save time and computational resources, especially when dealing with complex models that may have numerous external references or dependencies.

In practice, this feature is particularly useful when adjustments or modifications are being made in multiple areas of a design and the user needs to validate various changes before committing to updates on linked objects. By controlling the timing of these updates, users can ensure a more efficient workflow and avoid potential errors that may arise from realizing dependencies prematurely.

The other options do not accurately describe the function of delaying updates for linked geometry. Some may suggest related concepts, but they do not specifically address the postponement aspect, which makes "Delay Link Update" the most appropriate and precise choice for this scenario.