​What are sea salt, pollen, ash, smoke soot and fine soil associated with?​

Correct option is B

• Sea salt, pollen, ash, smoke soot, and fine soil are associated with dust particles. 
• Dust particles are tiny particles in the atmosphere that include sea salt, pollen, ash, smoke soot, and fine soil. These particles are collectively called aerosols and can be natural or human-made. 
• Dust particles and salt particles act as hygroscopic nuclei, which means water condenses around them to form water vapor and clouds. 
• Particulate matter is a general term for the mixture of solid particles and liquid droplets in the air. This includes aerosols, smoke, fumes, dust, ash, and pollen. 
• Pollen is a powdery particle that is released by flowering plants, trees, grass, and weeds to help fertilize other plants. Pollen can cause seasonal allergies. 
• Ash is the solid residue left over after a fuel undergoes combustion. Coal ash and wood ash are the most common types of ash.