Which is the only Indian monument that figured in the world's top 10 list of TripAdvisor Travellers' Choice awards for Landmarks?

Introduction / Context:
TripAdvisor's Travellers' Choice awards for Landmarks are based on millions of reviews and opinions from travellers around the world. Only a limited number of monuments make it into the global top 10 list, and it is a matter of pride when an Indian monument appears there. The question asks which Indian monument was the only one to figure in that world top 10 landmarks list, making it an important general knowledge fact about tourism and cultural heritage.

Given Data / Assumptions:

• The list is TripAdvisor Travellers' Choice awards for Landmarks on a global scale.
• The question specifies “the only Indian monument” in the world top 10 list.
• The options are Taj Mahal, Qutab Minar, Gateway of India, and India Gate.
• We assume the relevant year is when this fact was widely reported, and only one Indian site made it into the top 10.

Concept / Approach:
The Taj Mahal in Agra is one of the most famous monuments in the world and a UNESCO World Heritage Site. It frequently appears in global rankings of landmarks and tourist attractions because of its architectural beauty and historical significance. The approach is to recall that when TripAdvisor released a list of the top 10 landmarks in the world, Taj Mahal was the only Indian monument included, usually placed around the middle of the list, whereas the other Indian monuments listed as options did not make the top 10 global category at that time.

Step-by-Step Solution:
Step 1: Recognise that the question refers to a world level ranking of landmarks, not just an India specific list.Step 2: Consider which Indian monument has the strongest global recognition and tourist appeal.Step 3: Recall that the Taj Mahal often appears in such global lists, including the TripAdvisor Travellers' Choice awards for Landmarks, and was once ranked among the top 10 worldwide.Step 4: Confirm that the other options, Qutab Minar, Gateway of India, and India Gate, are important but have not commonly been placed in the global top 10 list.Step 5: Select Taj Mahal as the correct answer.

Verification / Alternative check:
To verify, remember that reports highlighted Taj Mahal's position both in world rankings and in the Asia specific list, where it often appears among the top few landmarks. By contrast, other famous Indian monuments generally appear in national lists or regional guides but did not reach the same global ranking in that particular TripAdvisor survey. This confirms that Taj Mahal is the only Indian monument that was part of the top 10 world landmarks list at that time.

Why Other Options Are Wrong:
Option B (Qutab Minar) is a famous historical monument in Delhi but has not been listed in the global top 10 landmarks by TripAdvisor. Option C (Gateway of India) and option D (India Gate) are iconic in Mumbai and Delhi respectively but did not achieve that specific world top 10 ranking. Therefore, none of these other monuments satisfies the condition of being the only Indian site in the global top 10 Travellers' Choice list.

Common Pitfalls:
Sometimes candidates may be tempted to select India Gate or Gateway of India because they are widely photographed and symbolically important, but global rankings are usually dominated by monuments with greater international fame and visitor numbers. Another pitfall is to forget that the question is asking for the world top 10 list, not a national ranking. Remembering Taj Mahal as India's most internationally celebrated monument helps avoid these errors.

Final Answer:
The correct answer is Taj Mahal, which was the only Indian monument to appear in TripAdvisor Travellers' Choice awards list of the world's top 10 landmarks.