Final answer:
All fields like text, numeric, and picklist can typically be made required in a database or a software form. However, in certain systems, a picklist might not be set to required due to having a default or null value.
Step-by-step explanation:
The question seems to relate to fields within a database or a software application where you can store different types of data. A text field is used to store alphanumeric characters, a numeric field is used to store numbers, and a picklist (sometimes referred to as a dropdown menu) contains a list of predefined options a user can choose from.
In general practice, any of these field types can be set as 'required' in a database or form, meaning that the user must enter some data into this field before they can save the record or submit the form. However, if the context is related to a specific software system that has an inherent limitation, then typically the 'picklist' might be a field that cannot be required because it always has a value, even if it's a default or null option. Without knowing the specific system in question, the answer provided is based on common software practices.