Select the option that can be used as a one-word substitute for the given group of words.
A busy, main road for public use

Correct option is A

The correct one-word for the given group of words is (a) Thoroughfare.
Thoroughfare: A public road or street that allows traffic to pass through, often busy and central. (मुख्य सड़क, सार्वजनिक मार्ग)
Example: The market is located on a major thoroughfare of the city.
Meanings of the other options:
· (b) Promenade: A paved public walk, typically along a waterfront (टहलने का स्थान)
· (c) Avenue: A wide road often lined with trees, especially in a town or city (राजमार्ग)
· (d) Highway: A main road for travel between towns and cities (राजमार्ग)