1.Prepositional phrases: "In public settings" and "within schools, offices, or public transportation systems" use prepositional phrases to provide context and location, adding detail and complexity to the sentences.
2.Relative clauses: "Items are frequently left behind in cafes, restaurants, or parks" uses a relative clause to add additional information about where items are often left, enhancing the depth of the sentence.
3.Adverbial clauses: "Additionally, good Samaritans sometimes turn in lost items to authorities" uses an adverbial clause to provide additional information about the actions of good Samaritans, adding complexity to the sentence structure.