A large outdoor advertising display in public spaces.

• A. Billboard (hoarding)
• B. Public transport advertising
• C. One-stop shopping
• D. Skyscraper ad

Answer: (A)

A large outdoor advertising display placed in public spaces is best described as a billboard (hoarding). This term refers to the classic fixed, high-visibility signs positioned along roadsides and in public areas to reach broad audiences with bold visuals and short messages. Billboards are designed for quick impact as people drive or walk by, making them the standard example of a large outdoor display.

Public transport advertising covers ads on vehicles or transit shelters, which is related but not the typical fixed roadside display described. One-stop shopping is a retail concept, not an advertising format. Skyscraper ads are large building-side boards, but the most universally recognized term for a single, large outdoor display in public spaces is billboard.