Final answer:
The correct answer is option D) He journeyed throughout the western United States, including California and South Dakota.
Step-by-step explanation:
In alignment with the provided details, the accurate choice is option D) "He journeyed throughout the western United States, including California and South Dakota." The individual in question embarked on an extensive exploration spanning the western regions of the United States, encompassing diverse landscapes such as California and South Dakota. This suggests a comprehensive journey, possibly marked by a quest for adventure, discovery, or personal exploration. The inclusion of specific states like California and South Dakota implies a broad and varied itinerary, reflecting a traverse through contrasting terrains and cultural experiences across the western expanse of the country.