Final answer:
Catgut is the suture material among the given options that is absorbable; Dacron, Nylon, and Silk are non-absorbable sutures.
Step-by-step explanation:
The suture material that is absorbable from the options provided is B. Catgut. Catgut sutures are made from the natural fibers found in the intestines of sheep or other animals, and these fibers are processed and sterilized to be used as absorbable suture material in surgical procedures.
Unlike catgut, other materials listed such as Dacron (polyester), Nylon, and Silk are non-absorbable suture materials. Dacron and nylon are synthetic polymers, which are commonly used for their strength and durability in a variety of applications including clothing and industrial uses. Silk sutures, made from natural silk fibers, are also non-absorbable and are known for their flexibility and strength.