Arrange modes of transport by increasing speed from slowest to fastest: (a) Bus, (b) Bullock cart, (c) Aeroplane, (d) Horse, (e) Rocket.

Introduction / Context:
Transport modes vary dramatically in speed. A typical ordering from traditional, animal-drawn vehicles to spaceflight reflects a consistent speed gradient. You must place the provided modes from slowest to fastest based on widely known averages.

Given Data / Assumptions:

• Bullock cart (very slow), Horse (faster), Bus (road vehicle at moderate speeds), Aeroplane (hundreds of km/h), Rocket (far faster, orbital/escape velocities).
• Assume normal operating conditions, not racing extremes.

Concept / Approach:
Use common-sense averages: bullock cart < horse < bus < aeroplane < rocket. While exact speeds depend on context, the relative ranking is uncontroversial for reasoning questions.

Step-by-Step Solution:
1) Bullock cart (b) — slowest.2) Horse (d) — faster than a cart.3) Bus (a) — motorized road speed.4) Aeroplane (c) — air travel.5) Rocket (e) — fastest by orders of magnitude.Hence: b, d, a, c, e.

Verification / Alternative check:
Even high-speed buses cannot match planes, and planes are vastly slower than rockets (km/s order for rockets).

Why Other Options Are Wrong:

• d, b, a, c, e or a, d, b, c, e: Misorder slow ground modes.
• c, d, a, b, e: Starts with aeroplane, which is not slowest.

Common Pitfalls:
Thinking of exceptional horse sprints or unusually slow buses; the question expects typical averages.

Final Answer:
b, d, a, c, e