Answer:
<em>to inform parents about childhood asthma; the style is formal.</em>
Explanation:
<em>In the second sentence, the author mentions "</em><em>If your child</em><em>" which tells us this is directed to the parents. The author is informing the parents about what to do if your child has asthma.</em>
Its being explained in the sentence
Etymology .studying of the history word dictionary
Pronoun reference. It is not clear whether “he went home” refers to Jeff or his brother.
