The appropriate law that protects Callum's personal information when he creates an account on the website of a sporting goods store is the Children's Online Privacy Protection Act (COPPA). This act is designed to protect the personal information of children under the age of 13 and imposes certain requirements on websites or online services directed to children.
If Callum's daughter is under 13, then COPPA would be particularly relevant. However, if the focus is solely on the protection of Callum's personal information (as an adult), other laws may also apply, but the best answer from the given options is the Children's Online Privacy Protection Act.