A special kind of label often used in conjunction with tables, that assigns a number to a curve, tangent or spiral is known as a ______ label.

• A. Tag
• B. Index
• C. Stamp
• D. Code

Answer: (A)

A tag label is used to identify Civil 3D objects by a numeric (or alphanumeric) tag stored on the object, and it’s the kind of label you commonly see paired with tables. Each curve, tangent, or spiral can have its own Tag value, which serves as a stable identifier that links the item to entries in a table or list. By choosing a label style that displays this Tag, you create a cross-reference: the table can reference the exact curve or segment by its number, making it easy to locate and discuss specific items on plans and sheets. This is why the Tag approach is the best fit here—the Tag is the dedicated identifier used across labeling and tables, rather than embedding a procedural index or other kinds of codes.