Which city hosted the Global Aviation Summit 2019, a major international conference on civil aviation and air connectivity?

Introduction / Context:
This question focuses on international conferences related to civil aviation. The Global Aviation Summit 2019 was an important event that brought together aviation ministers, airline executives, airport authorities, and aviation experts from many countries. Competitive exams often ask where such summits were held, because location reflects the host country strategic interest in a particular sector. Here, the objective is to recall which Indian city hosted this summit in 2019.

Given Data / Assumptions:
- The summit mentioned is the Global Aviation Summit in the year 2019.
- The options list four major Indian cities: Hyderabad, Mumbai, Kolkata, and Delhi.
- We assume the question refers to the official event organised by the Government of India and aviation partners in that year.

Concept / Approach:
The approach is rooted in current affairs memorisation. The Global Aviation Summit 2019, with the theme Flying for all, was organised in Mumbai. This event reinforced Mumbai role as a key aviation hub in India. Remembering the combination of summit name, year, theme, and city helps answer the question. The concept is that large international aviation conferences in India are most often hosted by major metro cities with large airports and hotel infrastructure.

Step-by-Step Solution:
Step 1: Recall that the Global Aviation Summit 2019 was a flagship aviation event organised under the Ministry of Civil Aviation of India. Step 2: Remember that this summit, with the theme Flying for all, was repeatedly reported as taking place in Mumbai. Step 3: Check the options and identify Mumbai among Hyderabad, Mumbai, Kolkata, and Delhi. Step 4: Confirm that no other listed city was associated with this summit in 2019. Step 5: Select Mumbai as the correct answer.

Verification / Alternative check:
If you look at civil aviation press releases or articles in newspapers from January 2019, you will find that the Global Aviation Summit was held in Mumbai, often specifying the venue as a prominent convention centre in that city. Additionally, summaries of the summit outcomes repeatedly mention that Mumbai was the host city, confirming the fact beyond doubt.

Why Other Options Are Wrong:
Hyderabad: Although Hyderabad is an important aviation hub, it was not the host city for the Global Aviation Summit 2019, so this option is incorrect.
Kolkata: Kolkata did not host this particular edition of the summit. It has its own events but is not relevant here, so this answer is wrong.
Delhi: Delhi is the national capital and home to key government ministries, which can mislead some candidates into guessing it. However, the 2019 edition of the Global Aviation Summit was officially held in Mumbai, not Delhi.

Common Pitfalls:
A frequent pitfall is to assume that all important international conferences are held in Delhi. Another is to confuse different aviation related events and spread them across cities in memory without associating each event with its actual location. The safe strategy is to revise a short list of major summits and their host cities, especially those that took place in the last few years.

Final Answer:
The Global Aviation Summit 2019 was hosted by the city of Mumbai.