The correct answer is C. Jupiter, the largest planet in our solar system, is named for the ruler of the gods in Roman mythology.
Step-by-step explanation:
In writing, an appositive phrase refers to a set of words that describe a noun and because they are not essential to the sentence these are always enclosed by commas. This implies if you need to combine the two sentences presented using an appositive you need to include the descriptive details in commas and add the rest of the information after it. According to this, the detail that could act as an appositive is "the largest planet in our solar system" because it describes Jupiter and therefore can be enclosed by commas to form an appositive. Thus, the sentence that combines the two sentences by using an appositive is "Jupiter, the largest planet in our solar system, is named for the ruler of the gods in Roman mythology" because in this there is an appositive mark by the commas and also all the details of the original sentences have included.