The Beijing Declaration is an important international document primarily concerned with which of the following broad issues?

Introduction / Context:
This question checks understanding of major United Nations related declarations, specifically the Beijing Declaration and Platform for Action adopted at the Fourth World Conference on Women in 1995. It is a key document in the global movement for gender equality.

Given Data / Assumptions:

• The question mentions the Beijing Declaration without giving the year or full title.
• The options refer to rights of children, rights of women, the right to development, and tariff reduction.
• We must recall which broad issue the Beijing Declaration focuses on.

Concept / Approach:
The Beijing Declaration and Platform for Action is a comprehensive global policy framework aimed at achieving gender equality and empowering women and girls. It outlines critical areas of concern, including education, health, violence against women, economic participation, and political representation.

Step-by-Step Solution:
Step 1: Recall that the Fourth World Conference on Women was held in Beijing in 1995.Step 2: The outcome document from this conference is commonly known as the Beijing Declaration and Platform for Action.Step 3: This document sets strategic objectives and actions for improving the status of women and promoting gender equality worldwide.Step 4: Compare the options. Only option B explicitly mentions the rights of women and gender equality.Step 5: Therefore, the correct answer is the option related to women's rights and gender equality.

Verification / Alternative check:
One way to confirm is to remember that child rights are more closely associated with the Convention on the Rights of the Child, while the right to development has its own declaration, and trade tariffs fall under World Trade Organization frameworks. The Beijing Declaration is repeatedly referenced in discussions about women's empowerment, which reinforces option B.

Why Other Options Are Wrong:
Option A is wrong because children's rights are addressed mainly in the Convention on the Rights of the Child, not the Beijing Declaration.
Option C is wrong because the right to development is the focus of a separate Declaration on the Right to Development adopted earlier by the United Nations.
Option D is wrong because reduction of tariffs is usually discussed under trade organisations and agreements, not within this declaration.

Common Pitfalls:
A frequent mistake is to confuse the many United Nations declarations by name alone, especially when they all sound broadly developmental. Associating Beijing specifically with the world conference on women helps prevent this confusion.

Final Answer:
The Beijing Declaration is mainly concerned with the advancement and protection of the rights of women and gender equality.