Answer:
Option C, island chains
Step-by-step explanation:
In convergence of two geographical boundaries, one slips (sub ducts) below the other while moving towards each other. This leads to formation of subduction zone. In the subduction process, when two oceanic plate converge, volcanic islands are formed. These volcanic islands are formed in a linear chain format and hence are known as volcanic arc for example Marians, Aleutians, etc.
Hence, option C is correct