Final answer:
The subordinate conjunction in the sentence provided is 'because'. It is used to introduce the reason for the action stated in the main clause.
Step-by-step explanation:
The student asked to identify the subordinate conjunction in the sentence: 'Because I like pizza, I order it on Fridays.' In this sentence, the subordinate conjunction is 'because'. It introduces the reason for the action that the main clause expresses.
In rhetoric, recognizing the use of subordinate conjunctions can be key to understanding the structure and persuasiveness of an argument. For instance, a roommate may use a sentence starting with 'because' to persuade you to go out for dinner instead of suggesting where to dine without stating a reason.
When making decisions such as what toppings to order on a pizza, people might prioritize their own preferences, consider the preferences of others, or find a compromise. Whether one opts for jalapenos, pepperoni, or a combination reflects their decision-making process and possibly their motives.