Final answer:
Isamu Noguchi was the first California sculptor to achieve worldwide fame. He began his career sculpting busts, later became renowned for his abstract art, and created works that interacted thoughtfully with their environments. Option D is correct.
Step-by-step explanation:
The first California sculptor to attain recognition and worldwide fame outside the U.S. was Isamu Noguchi. Noguchi, a Japanese-American artist, started his career by sculpting busts and moved to abstract art in the 1930s. After being voluntarily interned at the Poston Camp during World War II, he continued to produce designs and drawings and returned to New York City post-war to further advance his artistic career. His work, such as the Red Cube, which is known for its unique interaction with the surrounding architectural environment, and Zwillingsplastik, which provides a sense of floating through its two-part design, contributed to Noguchi's international fame.