The correct option is A
crossbreeding
When superior male of a breed is mated with a superior female of another breed, it is known as Cross-breeding. Many new animal breeds have been developed by this method. E.g. Hisardale is a new breed of sheep developed in Punjab by crossing Bikaneri ewes and Marino rams.
Cross breeding is the production of offspring by the mating or breeding of individuals or organisms that are not related genetically. This results in the offspring which have the superior qualities of both the breeds.
Crossing of two species that are from within the same genus is called interspecific hybridization.
Outbreeding is the process of breeding of unrelated animals belonging to the same species but is from different breeds or the breeding between two genetically distant groups or populations to obtain offspring.
Inbreeding is the sexual mating between the animals of the same breed where the out breeding takes place between the other breeds.
So, the correct answer is "option a".