Answer:
These are the sentences containing a pronoun shift:
4) Teenagers often want more freedom, but you need to show that you are responsible.
5) If a student wishes to go on the field trip, they must bring in a permission slip.
Step-by-step explanation:
Pronoun shift is a kind of grammatical error in which the author starts off by using a kind of pronoun and then ends up using another kind of pronoun in a sentence or paragraph.
The first sentence starts in third person (teenagers) and midway shifts to second person (you), indicating a pronoun shift.
The second sentence starts in third person singular (a student) and shifts to third person plural (they), indicating a pronoun change.
Pronoun shifts are best avoided because they are confusing for the reader.