Animal husbandry and plant breeding programmes are the examples of:

Animal husbandry programmes are concerned with raising animal for meat, fibre, milk, eggs, etc. They involve selective breeding of the animals.

Plant breeding programmes are concerned with altering the genetic pattern of the plant to increase their value and utility.

So for both animal husbandry and plant breeding programmes desirable characters need to be introduced in the plants or animals. This is done only by artificial selection.

Hence the correct answer is option (b).