Question 21 - Reading and Writing Practice Test for the SAT Exam

The following passage is adapted from a journal entry by an early 20th-century traveler describing his experiences on the Trans-Siberian Railway.

Every day brings new scenes of vast forests and distant mountains, and though the journey is long, the changing views are a constant delight. I keep my diary busy, trying to capture the essence of this epic adventure. Despite the discomforts of such a prolonged train ride, the unique encounters with fellow travelers from diverse backgrounds make each day worthwhile.

Which choice best states the main purpose of the passage?