• Preservation of Cut Flower Arrangements in Hot, Dry Weather:
• Vase Water Additives:
• In hot, dry weather, rapid transpiration induces severe water stress, bacterial occlusion of xylem vessels, and rapid flower wilting.
• Adding a pinch of salt (sodium chloride) or chemical floral preservatives increases osmotic pressure and retards microbial bacterial growth in the vase water, keeping stems open for continuous water uptake without clogging vascular bundles.
• Conclusion: A pinch of salt (Option 4).

Correct option: (4) Apinch of salt

• Design Elements: Visual and Tactile Texture:
• Definition: In interior design, housing, and clothing textiles, texture refers to the surface quality or 'feel' of an object (tactile texture) and how light reflects off it (visual texture).
• Descriptive Descriptors: Terms such as coarse, sandy, hairy, feathery, velvety, and waxy are universal sensory descriptors used to characterize tactile and visual textures of furnishing fabrics, wall surfaces, and decorative materials.
• Conclusion: Textures (Option 3).

Correct option: (3) Textures

• Ergonomic Features of Modular Kitchens:
• Modular Kitchen Components:
• modern modular kitchen consists of standardized prefabricated cabinet units engineered for maximum ergonomic efficiency and space utilization:
• Vertical tall units/cabinets: Maximize vertical storage for dry provisions.
• Magic corners / carousel units: Optimize otherwise inaccessible deep corner blind spots.
• Tailored counter heights: Adjusted to the homemaker's elbow height ($10 - 15\text{ cm}$ below elbow) to minimize spinal muscular fatigue.
• Sliding pull-out baskets & soft-close drawers: Provide seamless accessibility.
• Conclusion: Modular kitchen (Option 4).

Correct option: (4) Modular kitchen