Hi, your question is incomplete and this makes it difficult for you to answer it. However, when searching for your question on the internet, I was able to find the full version of that question, which is the version presented in the figure attached below. In that case, I hope the answer below can help you.
The parallel structure in the sentences presented in your question is formed as follows:
We can see that this sentence has a parallel structure because the parallel structure refers to the creation of a sentence where the clauses are organized in a similar way and presenting the same grammatical structure.
The sentence shown above has the first clause assembled by the words: "Vicky does her homework carefully and efficiently," this clause shows that Vick is dedicated to something. Furthermore, "Vicky" is the subject of the sentence and is promoting the action of the verb "to do" when doing her homework.
The second clause of the sentence is "Dereck plays bass and sings backup for his band," which also shows that Dereck is working on something. As in the first clause, this clause shows "Dereck" as the subject of the sentence, which is promoting the action of the verb "to play."
It is important for you to know that in a sentence the verb is the word that indicates an action or a state of mind, while the subject is the word that indicates the individual who is promoting the action of the verb or suffering the action of the video.
You can find more information on the links below:
https://brainly.com/question/11530356 (Provides another explanation for your question.)
https://brainly.com/question/6279354?referrer=searchResults (Information about what parallelism is)
https://brainly.com/question/12528331?referrer=searchResults (Information on what a verb is)
