When grouping ideas in an outline, it is important to remember to follow a pattern. You might group them according to concepts, in chronological order, in order of importance, etc. However, you need to make sure your ideas are coherent and they respect certain concepts. if not, when you start writing it would be difficult to organize a clear assay.
The answerr is "I also plan to organize more school dances and give my fellow students more opportunities to interact socially."
This is because it shows two same level of importance of two different words. It connects two ideas and treats it at the same level.
Pick the words that are describing sound :)
A., C., and D. are all correct