You take a story and explain the entire thing with only a couple paragraphs, and you don't want to give away any special details that way a person can know a little about the book and want to read it. Like a "A dog and His Ball" is about a lost dog who doesn't have a family and finds an old ball to play with. You would put this on the back of a book and then people would be drawn to read this book. ( I just made something up so it may not make sense sorry.)
I'm not really sure I understand what you are asking, but I tried to answer the best I could, please let me know if this isn't what you meant.
Answer: Parents, along with boys and girls are welcome to attend a dance battle.
The sentence above showed the correct in which the conjunction "and" is used to joined compound subjects. In the sentence above, the compound subjects are "boys and girls"
Answer:
I believe it would be A, I'm pretty sure
Explanation: