Sweden is a Scandinavian country in northern Europe. What is the capital city of Sweden?

Introduction / Context:
This question focuses on European geography by asking for the capital city of Sweden. Sweden is a Scandinavian nation known for its high standard of living, technology, and natural beauty. Its capital city, Stockholm, is important in politics, business, and culture. Remembering that Stockholm is the capital of Sweden is a fundamental part of general knowledge about Nordic countries.

Given Data / Assumptions:

The country mentioned is Sweden in northern Europe.
You are tasked with selecting its capital city from four options.
The options are Bern, Helsinki, Copenhagen, and Stockholm.
Each city listed is the capital of a European country, but only one is associated with Sweden.

Concept / Approach:
The key concept is to correctly pair Sweden with Stockholm. Stockholm is located on an archipelago along the Baltic coast and serves as the political and economic center of Sweden. Bern is the capital of Switzerland, Helsinki is the capital of Finland, and Copenhagen is the capital of Denmark. All of these capitals are European but belong to different nations. By recognizing Stockholm as the only option linked with Sweden, you can answer the question correctly.

Step-by-Step Solution:
Step 1: Identify that the question is asking about the capital of Sweden.Step 2: Recall that Stockholm is widely known as the capital city of Sweden.Step 3: Check the options and match each city to its respective country: Bern with Switzerland, Helsinki with Finland, and Copenhagen with Denmark.Step 4: Eliminate Bern, Helsinki, and Copenhagen because they are capitals of other countries.Step 5: Select Stockholm as the correct answer since it is the capital of Sweden.

Verification / Alternative check:
Maps of Europe and reference books on Nordic countries show Sweden with Stockholm marked as its capital, often with a special symbol or label. Travel guides also describe Stockholm as the main gateway for visitors to Sweden, highlighting attractions such as the Royal Palace and the old town. Bern, Helsinki, and Copenhagen appear under their respective nations in any reliable source, never under Sweden. This strong evidence confirms that Stockholm is the correct capital city for Sweden.

Why Other Options Are Wrong:
Bern is the capital of Switzerland, a landlocked country in central Europe. Helsinki is the capital of Finland, another Nordic country east of Sweden. Copenhagen is the capital of Denmark, located south of Sweden across the sea. While these capitals are fairly close to Sweden geographically, they belong to different countries. Therefore, none of them can be the capital of Sweden. Only Stockholm fulfills the requirement in this question.

Common Pitfalls:
Because Scandinavian and nearby European countries are often studied together, learners may mix up which capital belongs to which country. Some might confuse Helsinki and Stockholm or Copenhagen and Stockholm due to their shared northern European context. To avoid this, it is helpful to visualize the Nordic region on a map and label each country with its capital: Stockholm for Sweden, Oslo for Norway, Helsinki for Finland, and Copenhagen for Denmark. Using such mental groupings and regular revision strengthens your memory and reduces confusion in exams.

Final Answer:
The capital city of Sweden is Stockholm.