The correct answer that primarily protects Callum's personal information when he uses the site is the Children's Online Privacy Protection Act (COPPA).
COPPA is a federal law in the United States that protects the privacy of children under 13 years of age online, requiring websites to obtain verifiable parental consent before collecting personal information from children. Since Callum is buying soccer cleats for his daughter, this law is relevant in ensuring the site adheres to privacy protections for children's information.
The other options listed are not specifically designed to protect personal information on such transactions:
- Acceptable Use Policy refers to a set of rules applied by an organization to curb the use of its network and may not directly address privacy.
- Anti-piracy laws are primarily focused on protecting intellectual property and do not relate to personal data protection.
- Federal Trade Commission Act deals with consumer protection and unfair business practices, but it is not specifically focused on the privacy of personal information concerning children.
Thus, COPPA is the applicable law in this context.