What is an Omnibus?

• A. A multi-layered bus often pulled by horses, but eventually double decker buses
• B. A type of elevated train
• C. A horse-drawn carriage
• D. A steamship

Answer: (A)

An omnibus is a vehicle used for public transportation along fixed routes, carrying many passengers. It began as a horse-drawn public carriage and, over time, evolved into motorized buses, including the familiar double-decker style. That history—from horse-drawn service to multi-passenger buses—fits the concept best, which is why the choice describing a bus that started with horses and ended up as a double-decker captures the idea.

The other options point to different modes of transport (an elevated train, a steamship) or a single, private horse-drawn carriage, which don’t convey the public, route-based service that defines an omnibus.