Which method is commonly used for vegetative propagation?

Vegetative propagation is a method of asexual reproduction that allows plants to reproduce without the formation of seeds. Among the given options, cutting is a widely utilized technique for vegetative propagation. This method involves taking a part of a plant, typically a stem or leaf, and placing it in a suitable environment where it can develop roots and grow into a new, independent plant.

Cuttings take advantage of the plant's inherent ability to root from a stem or leaf, which can often occur naturally in many species. By using cuttings, gardeners and horticulturists can rapidly produce new plants that are genetically identical to the parent, ensuring desirable characteristics such as flower color, growth habit, or disease resistance.

Other choices provided, while they are important methods in botany, are not primarily associated with vegetative propagation. Seed sowing involves sexual reproduction and genetic variation, hybridization refers to the crossing of different species to create hybrids, and grafting involves joining parts of different plants together but is not the same as typical vegetative propagation techniques like cutting.