According to The Economist Global Liveability Report, which city has been named the world's most liveable city for the seventh year in a row?

Introduction / Context:
Liveability indexes measure how comfortable, safe and convenient it is to live in a city. The Economist Intelligence Unit publishes a Global Liveability Report every year, ranking cities according to factors such as stability, health care, culture, environment, education and infrastructure. For several years, one city consistently occupied the top position. This question focuses on the city that was named the world most liveable city for seven years in a row.

Given Data / Assumptions:

• The ranking mentioned is The Economist Global Liveability Report.

• The city in question held the top spot for seven consecutive years.

• Options include different well known cities, both Indian and foreign.

• We assume the learner is aware of this widely reported fact in current affairs.

Concept / Approach:
The approach is based on familiarity with recent international rankings. Melbourne, a major city in Australia, was repeatedly ranked number one in the Global Liveability Report for several consecutive years during the last decade. Although Vienna later overtook Melbourne in some years, the specific fact of seven years in a row points clearly to Melbourne. Thus, recognising this historical pattern helps in selecting the correct option.

Step-by-Step Solution:
Step 1: Identify the index referred to in the question as The Economist Global Liveability Report. Step 2: Recall which city has often been associated with a long streak of top rankings in liveability, which is Melbourne in Australia. Step 3: Compare this recollection with the options provided: Hyderabad, Vienna, Melbourne, New Delhi and Zurich. Step 4: Note that Vienna did lead the rankings in some specific years but not with the exact seven year continuous streak mentioned here. Step 5: Conclude that the city with seven consecutive years at number one is Melbourne and select this option.

Verification / Alternative check:
The fact can be verified by checking archived editions of the Global Liveability Report from The Economist Intelligence Unit. News articles summarising these reports often highlight that Melbourne held the top position for seven years before being displaced. Consulting any credible international news source or official summary confirms that Melbourne enjoyed this extended run at the top of the ranking, whereas other cities like Vienna are associated with later years.

Why Other Options Are Wrong:
Hyderabad and New Delhi are important Indian cities, but they do not top global liveability rankings; in fact, they face various challenges related to pollution and infrastructure. Vienna has indeed achieved number one liveability rankings but not for seven years in a row during the same period of reference. Zurich is also a very liveable city but does not match the specific detail of seven consecutive years at the top of this particular report. Therefore, these options are not correct for this fact based question.

Common Pitfalls:
A frequent mistake is to focus only on the idea of liveability without attention to the phrase seven years in a row. This may tempt some learners to choose Vienna because of more recent headlines without considering the duration of the streak. Others may wrongly assume that a city from their own country appears at the top. Reading the question carefully and linking the exact wording of the streak to Melbourne avoids such errors.

Final Answer:
The city that was named the world most liveable city for the seventh year in a row in The Economist Global Liveability Report is Melbourne.