Correct Option
The correct option is Availability of minerals..
Explanation
Population distribution is influenced by a variety of factors, which are generally classified into three broad categories: Geographical factors (climate, terrain, water availability), Economic factors (minerals, urbanization, industrialization), and Social and Cultural factors.
Option Analysis
- Religious significance of a place. Religious significance of a place: This is a Social/Cultural factor. Places with religious or cultural significance (e.g., Varanasi, Jerusalem, Mecca) attract people, leading to higher population density despite potentially adverse climate or terrain.
- Social unrest. Social unrest: This is a Social/Political factor. Areas experiencing social instability or conflict tend to push populations away, leading to out-migration and lower population density.
- Political unrest. Political unrest: Similar to social unrest, political instability is a Social/Political factor that discourages settlement and encourages migration to safer regions.
- Availability of minerals. Availability of minerals: This is an Economic factor. Mineral deposits attract industries, which in turn generate employment. Skilled and semi-skilled workers move to these areas for economic opportunities (e.g., the Katanga-Zambia copper belt in Africa). Therefore, it is not a social or cultural factor.
Key Takeaway
Availability of minerals is strictly an economic determinant of population distribution because it drives industrialization and employment, whereas religious significance and political stability fall under social and cultural determinants.