Answer:
The correct answer is "The rules and codes it created were too complex".
Step-by-step explanation:
The National Recovery Administration (NRA) was a national agency established in 1933 by U.S. president Franklin D. Roosevelt with the main goal of uniting different sectors of society by using codes of fair competition. The idea was to reduce destructive competition among industry, labor, and government by setting and following certain rules and codes. However, the NRA was unsuccessful because the rules and codes created were too complex and difficult to follow.