Which airport is widely recognised as the busiest in the world in terms of international passenger traffic among the options given?

Introduction / Context:
This question tests knowledge of global aviation statistics, particularly regarding the busiest airports in the world. Air traffic rankings can be based on total passengers or only international passengers. Dubai International Airport has consistently been recognised as the busiest airport in the world by international passenger traffic in recent years. Being aware of this distinction is important for general knowledge and for exams that include questions on transport and infrastructure.

Given Data / Assumptions:
- The question asks for the busiest airport in the world in the context of international passenger traffic among the given options.
- The options reference cities that correspond to major airports: Hyderabad, London, Newyork, and Dubai.
- We assume the question is based on the widely reported ranking of Dubai International Airport as the world leading hub for international passengers, especially around 2018 and beyond.

Concept / Approach:
The concept is understanding that while some airports like Atlanta lead in total passenger numbers, Dubai International Airport leads in international passenger traffic. London Heathrow and airports in New York are also busy but rank lower for international passengers compared to Dubai. The approach is to focus on the phrase busiest in the world and the role of Dubai as a global transit hub connecting Europe, Asia, and Africa.

Step-by-Step Solution:
Step 1: Identify the airports implied by the options: Hyderabad corresponds to an important Indian airport, London usually refers to Heathrow, Newyork to major airports like JFK, and Dubai to Dubai International Airport. Step 2: Recall that Dubai International Airport has been reported multiple times as the world busiest airport for international passenger traffic. Step 3: Understand that while London Heathrow and New York airports are also extremely busy, they have generally ranked below Dubai in recent years on international passenger counts. Step 4: Hyderabad is a major Indian airport but does not rank near the very top globally in any of these categories. Step 5: Therefore, among the options, Dubai is the correct answer.

Verification / Alternative check:
Passenger traffic reports from international airport councils show that Dubai International Airport has retained its position as the busiest airport for international passengers for several years in a row. News articles summarising these rankings mention that Dubai surpasses Heathrow and New York in this specific metric. This external data supports the selection of Dubai as the correct answer in this question.

Why Other Options Are Wrong:
Hyderabad: Although Hyderabad has a busy international airport, its passenger traffic figures are far below those of the top ranked global hubs, so it cannot be considered the busiest in the world.
London: London Heathrow is a very busy airport and often ranks near the top, but Dubai has overtaken it in international passenger numbers, so this option is not correct in the current context.
Newyork: Airports serving New York, such as JFK, are important international gateways, but they do not top the list of busiest airports in the world by international passenger traffic, making this option incorrect.

Common Pitfalls:
Some candidates may think of Heathrow or a New York airport first because of their fame, overlooking the qualifier about international passenger traffic. Another pitfall is to ignore updated rankings and go by older data, which may place other airports in top positions. To avoid this, always distinguish between total traffic and international traffic, and revise the most recent data for at least the top few airports.

Final Answer:
Among the options given, the airport recognised as the busiest in the world for international passenger traffic is Dubai International Airport.