Step 1: Understanding Olmec Baby Sculpture.
The Olmec Baby is a famous ceramic sculpture originating from the Olmec civilization, which was an ancient Mesoamerican culture. The Olmecs are known for their large stone heads, as well as small figurines, including the Olmec Baby, which is typically associated with the Mexican culture.
Step 2: Analysis of options.
- (1) Japanese: Not associated with Olmec Baby.
- (2) Australian: No connection with Olmec culture.
- (3) Mexican: Correct, the Olmec civilization is a key part of Mexico's ancient history.
- (4) German: Incorrect, no connection with Olmec culture.
Step 3: Conclusion.
Thus, the Olmec Baby sculpture is associated with the Mexican culture.