A key detail is something that is important.
A minor detail is something that little and is not that important.
1-4 look correct to me.
for #5, you are correct that to come is not a prepositional phrase because there is no object. If I were you, I'd leave it alone and keep the one next it. all others look correct.
Answer:
C. Symbolic-interaction approach
Explanation:
Symbolic-interaction approach is the sociological perspective which would mostly likely support the provision of equal opportunities to male and females in the United States.
<em>This is because, the approach talks about the usefulness of both the male and female in the society as well as its symbolic interaction which exist between them.</em>