Paragraph 1 discusses several statistics about British teenagers, such as drinking habits, cooking skills, smoking, reading, television watching, and exercise. These points collectively indicate serious problems faced by British teenagers, making option (c) the most fitting title.
Paragraph 2 contrasts the parents' perception of the most serious problem (drugs) with the author's implied view, suggesting that adults might not fully understand or prioritize the real issues teenagers face. This aligns with the idea that grown-ups might see teens' problems incorrectly, making option (e) the most suitable title.
The titles (a), (b), (d), and (f) are not directly addressed by the provided paragraphs.