1. Present perfect tense: "Bikes have become increasingly popular" uses the present perfect to show a change over time, which is a sophisticated way to talk about trends.
2. Adjective phrases: "well-developed cycling infrastructure," "affordable," "environmentally friendly," and "great for your health" all use adjectives and adjective phrases to add detail and description.
3. Infinitive of purpose: "to commute to school or work" uses the infinitive form to explain the purpose of using bikes.
4. Parallel structure: "affordable, environmentally friendly, and great for your health" is a list using parallel structure, which makes the answer sound smooth and natural.