Option c is correct friend. Because, Cutting, Layering and Grafting are artificial method of vegetative propagation made by Man for their needs in their life, Whereas Budding is not a man made. Means, it's not artificial, it is a natural process.

Vegetative propagation is a process of reproduction in plants where new individuals are produced from vegetative parts of the parent plant. There are various methods of vegetative propagation, including cutting, layering, budding, and grafting. However, budding is not an artificial method of vegetative propagation.

Explanation:

Cutting:
Cutting is a process of vegetative propagation where a part of the stem, root, or leaf of the parent plant is cut and planted in the soil to develop into a new plant. This method is commonly used for plants like rose, sugarcane, and chrysanthemum.

Layering:
Layering is a process of vegetative propagation where a stem of the parent plant is bent and covered with soil, leaving the tip exposed. The covered part of the stem develops roots and shoots, which can be separated from the parent plant to form a new plant. This method is commonly used for plants like jasmine, guava, and blackberry.

Grafting:
Grafting is a process of vegetative propagation where a stem or bud of one plant is joined with the stem or root of another plant to form a single plant. This method is commonly used for fruit trees like apple and mango, where the desired variety is grafted onto a rootstock to improve the quality and yield of the fruit.

Budding:
Budding is a process of vegetative propagation where a bud of the parent plant is inserted into a slit made on the stem of the rootstock plant. The bud develops into a new shoot, which grows into a new plant. This method is commonly used for fruit trees like citrus, where the desired variety is budded onto a rootstock to improve the quality and yield of the fruit.

Conclusion:
Budding is not an artificial method of vegetative propagation as it occurs naturally in plants, where buds develop into new shoots. However, it can be used as a method of propagation in horticulture to improve the quality and yield of fruit trees.