Soda-lime glass is a prevalent type of glass used in construction, primarily for its clarity and cost-effectiveness. Let's understand why it is predominantly utilized for transparent window panes and glazing rather than other applications like thermal insulation boards, fire-resistant partitions, or structural load-bearing components.

Explanation:

1. Composition and Properties: Soda-lime glass is mainly composed of silica, soda, and lime. It is known for its excellent optical clarity and ease of manufacturing, which makes it a practical choice for applications requiring transparency.
2. Primary Use: The main application of soda-lime glass is in the production of items where transparency is critical, such as window panes and glazing. This is because it allows natural light to pass through while providing a clear view, which is essential in architectural design.
3. Limitations for Other Uses:
   • Thermal Insulation: While glass can be used in double glazing for insulation, soda-lime glass alone does not provide significant thermal insulation. Specialized glass like low-E glass is more suitable for insulation purposes.
   • Fire Resistance: Soda-lime glass does not inherently have fire-resistant properties. Fire-resistant glass, such as wired glass or specially treated glass, is used for these applications.
   • Structural Components: The brittleness and lack of tensile strength of soda-lime glass make it unsuitable for structural load-bearing applications, which typically require materials like steel or reinforced concrete.
4. Conclusion: Given its properties, soda-lime glass is best suited for transparent window panes and glazing, where its clarity and cost-effectiveness can be fully utilized.

Thus, the correct answer is:

Transparent window panes and glazing.