“...I realized that I knew less about loneliness than I had thought - and much less than I would know when he went away.” What does this mean, and why do you think is important

c. explains words’ origins and variations.

no its not a run on sentence however i think you meant wet suits not sours also a run on sentence would be like surfers surf all winter long in southern california by using wet sours to keep them warm and the live their all year long  

situational archetype describes the adventures of hero. the examples of situational archetypes are the quest, good vs evil, the task which represent respectively search, good forces, characters vs the evil ones and a certain job that must be done. from the given options, we cannot observe the subplot the beauty and the beast which is a correct answer for this question.

artists: xxxtentacion, lil baby, drake, post malone, khalid, bryson tiller, jermih, j. cole, russ, the weeknd, travis scott, kendrik lamar