Final answer:
The correct suture size for an adult cattle laparotomy is 2-0, as larger animals require stronger sutures to ensure proper healing and to withstand the stress of movement.
Step-by-step explanation:
The appropriate suture size for an adult cattle laparotomy is a. 2-0. Suture sizes are designated by numbers and the larger the number, the smaller the suture. Since cattle are large animals, they require a larger and stronger suture. A 2-0 suture is robust enough to provide sufficient tensile strength for the healing of the incision made during a laparotomy. It's crucial to use sutures that are strong enough to withstand the stress of the animal's movements and the thickness of bovine tissues.