Capital-city classification: “Colombo : Kathmandu : Havana” — identify the shared category for the trio.

Introduction / Context:
Recognizing world capitals is a staple of GK analogies. Colombo (Sri Lanka), Kathmandu (Nepal), and Havana (Cuba) are national capitals.

Given Data / Assumptions:

• Colombo → (Commercial capital; Sri Jayawardenepura Kotte is the legislative capital of Sri Lanka; GK sets often list Colombo as a capital.)
• Kathmandu → Nepal’s capital.
• Havana → Cuba’s capital.

Concept / Approach:
Select the category that unites them at the national-capital level (as used in common GK sets).

Step-by-Step Solution:
1) Identify each city’s national status.2) Choose the category “capitals of countries.”3) Discard options about continents or sports.

Why Other Options Are Wrong:

• African/European cities: Only Havana is in the Americas; the set is cross-continental.
• Sports cities/island towns: Not a precise common category across all three.

Common Pitfalls:
Over-focusing on geography rather than political status.

Final Answer:
They are capitals of countries