The manual scarttering of seeds is called broadcasting
hence,b is the right option.

Traditional Method of Sowing by Scattering
Sowing seeds by scattering them over the soil surface is a traditional method that has been practiced for centuries. This method is known as broadcasting and is commonly used for sowing seeds of crops like wheat, rice, barley, and more.

Process of Broadcasting
- In broadcasting, seeds are scattered evenly over the entire field by hand or using a seed drill.
- The seeds are spread in a way that ensures uniform coverage of the field.
- This method requires skill and experience to ensure proper distribution of seeds.

Advantages of Broadcasting
- Broadcasting is a simple and cost-effective method of sowing seeds.
- It does not require specialized equipment, making it accessible to small-scale farmers.
- It allows for a quick and efficient way to sow seeds over a large area.

Disadvantages of Broadcasting
- One of the main disadvantages of broadcasting is that it can lead to uneven distribution of seeds.
- It may result in overcrowding of plants in some areas and sparse growth in others.
- Broadcasting also makes it difficult to control the spacing between plants.

Conclusion
Broadcasting is a traditional method of sowing seeds by scattering them over the soil surface. While it is a simple and cost-effective technique, proper skill and experience are required to ensure uniform distribution of seeds. Despite its disadvantages, broadcasting remains a widely used method of sowing in agriculture.