1.Gerund as a subject: "Engaging in dangerous activities" uses a gerund as the subject of the sentence, demonstrating a complex grammatical structure.
2.Infinitive phrase as an adverbial: "to set and achieve personal goals" uses an infinitive phrase as an adverbial to describe the purpose of engaging in dangerous activities, adding depth to the sentence.
3.Adjective phrase as a complement: "incredibly rewarding" functions as an adjective phrase complementing the subject "sense of accomplishment," enhancing the expressiveness of the sentence.
4.Relative clause: "that comes from achieving something daunting" uses a relative clause to provide additional information about "sense of accomplishment," showcasing the ability to use complex sentence structures.