What does a read-only control allow at runtime?

A read-only control at runtime is designed to present information to the user without allowing any modifications. This type of control is particularly useful in scenarios where the integrity of the data must be maintained or where the displayed information is for reference purposes only. By permitting users to view the value but not edit it, the system ensures that the original data remains intact while still allowing users to access the necessary information for decision-making or other processes.

In contrast, the other options suggest functionalities that a read-only control does not support, such as enabling edits, allowing deletions, or changing based on conditions, which are beyond the scope of what read-only controls facilitate.