What is the abbreviation for Road?

The abbreviation for "Road" is "Rd". This abbreviation is widely recognized and used in various contexts, particularly in addressing locations or in transportation-related signage. It effectively conveys the full term in a concise manner, which is useful in maps, navigation systems, and postal addresses.

The other options do not accurately represent the standard abbreviation for "Road." "R" is too vague and could refer to many other terms. "Ro" does not match any common abbreviation for "Road," and "Roa" is incorrect as well, as it is not a recognized shortening of the word. The use of "Rd" aligns with common practices in abbreviating street types in both urban planning and everyday communication.