Final answer:
Pharmacies in Washington State are indeed required to have their phone number printed on prescription labels, according to the state's regulations.
Step-by-step explanation:
Washington State regulations regarding pharmacies prescribe specific requirements for label information on prescription containers. According to the Washington Administrative Code (WAC) 246-875-030, pharmacies are mandated to include various pieces of information on a prescription label. Crucially, this includes the pharmacy's phone number, which allows patients to contact the pharmacist with any questions or concerns regarding their medication. Therefore, the answer to the student's question is A. True.