Question

set of numbers or numbers and letters together to show a position on a map. a compass b road map c coordinates d zip code

Explanation:

• A compass shows cardinal directions, not map positions via numbers/letters.
• A road map is a map type, not a position indicator set.
• Coordinates use numbers/letter combinations to mark map positions.
• A zip code identifies geographic regions, not precise map positions.

Answer:

C. Coordinates