The last sentence is correct, because the other ones either had periods in the middle or too many commas in them.
Answer:
C. horribly beautiful
Explanation:
An oxymoron is when a statement includes contradictory terms in conjunction
horrible and beautiful are contradictory terms as they are seen as complete opposites (you would not use the word horrible to describe something beautiful as they mean completely diffferent things)
The anecdote that introduces this topic, is the beginning sentence.
"When adolescence hit Frances Jensen's sons, she often found herself wondering, like all parents of teenagers, "What were you thinking?"
