Final answer:
Adolescents find baby talk offensive because it undermines their sense of autonomy and maturity. It is important to communicate with them in a way that respects their developmental stage and growing independence.
Step-by-step explanation:
Never use "baby talk" with adolescents because this offends them. When interacting with individuals who are in their teenage years, it's important to communicate in a way that acknowledges their maturity and development. Adolescence is a time of significant growth and change, and young people in this age group are striving to be taken more seriously and establish their independence. Using baby talk can be seen as belittling or disrespectful, undermining their sense of autonomy and self-respect.