Final answer:
The "Anti Chain Store Act" is the Robinson-Patman Act, focused on preventing price discrimination by chain stores. The correct answer is option c).
Step-by-step explanation:
The act sometimes referred to as the "Anti Chain Store Act" is c) the Robinson-Patman Act. This act was passed in 1936 as an amendment to the Clayton Antitrust Act. It specifically addresses price discrimination by chain stores, aiming to protect independent retailers from unfair competition by chain stores that could leverage bulk buying discounts to offer lower prices. While not one of the primarily mentioned antitrust laws like the Sherman Antitrust Act or the Clayton Antitrust Act, the Robinson-Patman Act plays a crucial role in maintaining fairness in the marketplace.