Question

compared to younger children, teenagers have: smoother, drier skin. fewer colds and allergies. a higher voice pitch. finer, lighter hair.

Explanation:

• As children grow into teenagers, their immune systems develop. Younger children have less developed immune systems, making them more prone to colds and allergies. Teenagers, with more mature immune systems, generally experience fewer colds and allergies compared to younger children.
• Teenagers (especially boys) often experience voice - deepening (lower pitch) due to hormonal changes during puberty, so “a higher voice pitch” is incorrect.
• Teenagers may have oilier skin (due to increased sebum production) rather than “smoother, drier skin”.
• Hair characteristics like fineness and lightness are more related to genetics and ethnicity rather than a simple comparison between younger children and teenagers.

Answer:

fewer colds and allergies.