Final answer:
The sentence is explaining the reasons behind the restrictions on smoking in crowded outdoor areas.
Step-by-step explanation:
The function of the sentence 'these health concerns have caused my buried and businesses to restrict smoking in crowded outdoor areas, but there are other reasons for the bans as well' is to explain the reasons behind the restrictions on smoking in crowded outdoor areas. The sentence implies that health concerns have led to these restrictions, but there are also additional reasons for implementing the bans. The sentence is providing context and introducing the topic of smoking restrictions.