Final answer:
Grading of rabbit meat by producers is not mandatory by the USDA.
Step-by-step explanation:
The statement Grading of rabbit meat by producers is mandatory by the USDA is false.
The United States Department of Agriculture (USDA) sets standards for grading meat, including beef, lamb, and poultry, but it does not have specific grading standards for rabbit meat.
However, rabbit meat can still be inspected by the USDA to ensure its safety and wholesomeness.