A part of a scentence is best defined by heat the theme is.
I believe it would be A. Violence can be uncontrollable.
Hello, the correct answer would be either A or D. B cannot be correct because it still remains a fragment. The same case is with C. A might be correct in the following sense: Since, they had traveled often. "Since" meaning - after that. And D might also be correct because if you delete "since", you are left with - "They had traveled often", which is a completely correct and completed sentence.
7th grade would be middle school
The answer is my. It is "describing" the flowers and saying that the flowers are mine.
I, her, and everyone are pronouns that function as a noun phrase. They do/receive the action, while my is "describing" the flowers.
