Correct Option: B. Transportation, education and commerce Detailed Explanation: To understand why option B is the correct answer regarding the principal functions of Ubi, we need to analyze what Ubi represents in a geographical context. Ubi can refer to a specific region, city, or area that serves as a hub for various activities. The functions of any area can be categorized into several sectors, including transportation, education, commerce, health care, and agriculture.

1. Transportation:
2. Transportation is a critical function for any urban or regional area. It facilitates the movement of people and goods, which is essential for economic development. Areas with strong transportation networks (like roads, railways, and airports) tend to thrive because they can connect to larger markets and resources. Ubi likely has developed infrastructure that supports efficient transportation, making it a principal function.
3. Education:
4. Education is another vital function of urban areas. It encompasses schools, colleges, and universities that provide learning opportunities for the population. A well-educated workforce is crucial for economic growth and innovation. Ubi likely has educational institutions that contribute to the development of human capital, making education a key function.
5. Commerce:
6. Commerce refers to the activities related to buying and selling goods and services. A vibrant commercial sector is essential for economic sustainability. Ubi likely has markets, businesses, and trade activities that drive its economy, making commerce a principal function.

Why Other Options Are Weaker:

• Option A: Religion, health care and farming
• While religion and health care are important, they do not encompass the broader economic functions that drive urban areas. Farming is typically associated with rural areas rather than urban centers. Therefore, this option does not reflect the primary functions of a region like Ubi.
• Option C: Transportation, manufacturing and health care
• Although transportation is correctly identified, manufacturing and health care do not capture the full scope of functions in a typical urban area. Manufacturing may not be as prominent in all urban settings, especially if Ubi is more service-oriented. Health care is important but does not match the economic drivers of education and commerce.
• Option D: Farming, education and commerce
• This option includes education and commerce, which are relevant, but farming is less likely to be a principal function in an urban context. Farming is more associated with rural areas, making this option less applicable to Ubi.

Summary of Key Points:

• Transportation is essential for connecting markets and facilitating economic growth.
• Education develops human capital, which is crucial for innovation and workforce development.
• Commerce drives the economy through trade and business activities.
• Other options either focus on less relevant functions or do not fully capture the urban context of Ubi.

This thorough understanding of the functions of Ubi will help you in your geography studies and prepare you for similar questions in your exams.