1. Present simple tense: The answer uses the present simple tense throughout (e.g. "fashion is a major area," "They’re really influenced by trends") to talk about general habits and opinions, which is appropriate for this type of question.
2. Relative clause: "where young people spend their money" is a relative clause that adds detail to "a major area," showing good sentence structure.
3. Infinitive of purpose: Phrases like "to look stylish," "to fit in with their peers," and "to stand out online" use the infinitive form to explain reasons, which is a natural and effective way to express purpose.
4. Not just... but also: The structure "not just... but also..." is used to show contrast and add emphasis, making the answer more complex and fluent.