'Hisardale' is a breed of sheep developed by crossing between

Explanation:

Cross breeding is a method used to mate superior males of one breed with superior females of another breed.

This method of mating combines the desirable qualities of two different breeds.

Hisardale is a new breed of sheep made by crossing Bikaneri ewes and Merino rams.

Final Answer:

The correct answer is Option A: Bikaneri ewes and Merino rams.