Question: What is the implication for a Mobile Equipment (ME) when a Proactive UICC initiates an action through a command that indicates the availability of a help feature during a dialog with the user?
Option 1: The ME must automatically display the help information to the user without prompting.
Option 2: The support for displaying the help feature is optional for the terminal (ME).
Option 3: The ME will ignore the command if it does not support the help feature, terminating the dialog.
Option 4: The user's response to the command is only valid if they have accessed the help information first.
Explanation: This correct answer highlights the flexibility given to terminals (ME) in handling proactive UICC commands that offer help features. By making support for these features optional, terminals can vary in how they assist users during interactive dialogs initiated by the UICC, without violating specifications. This impacts user experience and terminal design, as manufacturers decide whether to implement this feature based on their product's target market and capabilities.