Final answer:
The example of employees at an ice cream parlor each with their own specialty illustrates the concept of parallelism, which is the use of similar grammatical structures to create a sense of balance and order. Hence, option (c) is correct.
Step-by-step explanation:
In the scenario given, where various employees at an ice cream parlor each have their own specialty such as making banana splits or ice cream cakes, this is an example of parallelism. Parallelism occurs when parts of a sentence are grammatically similar or are constructed in a similar way.
In this case, the parallel structure is in how the sentence describes each employee and their specific task, illustrating the organization and specialty of roles within the parlor. It reflects the structured and balanced nature of the way tasks are allocated, much like how figurative language can create balance and rhythm in a poem.