Classical plant breeding involves

The correct option is D Hybridisation followed by artificial selection

Classical plant breeding
Classical plant breeding is the technique that uses various genetic principles to breed two plants with desired characteristics and produce a hybrid plant that has a combination of the superior characteristics of both the parents. It involves pollination, genetic engineering followed by artificial selection of progeny.
Hybridization with natural selection
Hybridization is the process of crossbreeding the genetically dissimilar parents to produce a hybrid. If the hybrid produced is better fitted to the local environment than the parents, then natural selection will favour these individuals.
Artificial selection
In artificial selection, human beings select the organisms with desirable characteristics and breed them in a controlled manner to produce offspring with desired traits. For example, plants with larger size of grains and fruit in plants are artificially selected over others.
Domestication
Domestication is the change that happens in wild organisms, when they are kept by humans for a long time.
Mutation breeding
Mutation breeding is the process of inducing desirable mutations in genes of a crop plant with the help of physical or chemical mutagens.
Final answer
(B) Hybridisation followed by artificial selection