Final answer:
The ability to delete picklist values on standard fields depends on the system; some values might be deletable, while others are protected due to their role in system processes or reporting.
Step-by-step explanation:
The ability to delete picklist values on standard fields in a software platform largely depends on the specific system or platform you're using. Generally, picklist values are considered part of the data model and are meant to be customized to fit the needs of the business processes they support. In some cases, yes, picklist values on standard fields may be deleted if they are no longer required or if they were added erroneously. However, certain standard fields may have picklist values that are integral to the function of the system and therefore cannot be deleted. These may be protected due to their use in system processes or reporting. In short, the correct answer would be '3) It depends on the specific standard field' because the functionality can vary between different systems and certain picklist values might be locked or protected.