Classification — road vehicles: choose the only item that does NOT belong to the four-wheeler group.

Introduction / Context:
Transport classification often groups vehicles by typical wheel count/use. Three options are standard four-wheelers; one is typically a two-wheeler.

Given Data / Assumptions:

• Car → four-wheeler.
• Bus → multi-axle, but fundamentally a road vehicle with more than two wheels.
• Jeep → four-wheeler.
• Scooter → typically a two-wheeler in common usage.

Concept / Approach:
Classify by conventional wheel count and category.

Step-by-Step Solution:
1) Car/Bus/Jeep → four or more wheels; same broad category.2) Scooter → two wheels; belongs to motorbikes/scooters category.3) Therefore “Scooter” is the odd one out.

Verification / Alternative check:
Driving license categories often separate two-wheelers (scooters/motorcycles) from four-wheelers (cars/jeeps/buses).

Why Other Options Are Wrong:
They are all four-wheel (or multi-wheel) passenger vehicles.

Common Pitfalls:
Over-focusing on passenger capacity; wheel class is the simpler discriminator here.

Final Answer:
Scooter