The correct option is
D Crossbreed
'Hybrid' means something that is a mixture of two very different things.
Option B - 'Pedigreed' is used to describe an animal, especially a dog, whose parents and other relations are all of the same breed. Thus option B is incorrect.
Option C - 'Hackneyed' means a phrase or a word that is used so often that it becomes boring. Thus option C is incorrect.
Option D - 'Unusual' means different from others of the same type in a way that is surprising, interesting or attractive. Thus option D is incorrect.
Option A - 'Crossbreed' means an animal or plant that is a mixture of breeds and therefore is a new variety. Thus option A is the correct answer.
'Hybrid - Crossbreed'