Final answer:
The Poison Prevention Packaging Act mandates child-resistant packaging for certain medications, including aspirin and acetaminophen, with exceptions for convenience packages. Thus, only aspirin containers without child-resistant packaging are provided as an exclusion for specific cases.
Step-by-step explanation:
Regarding child-resistant packaging for medication, the Poison Prevention Packaging Act (PPPA) of 1970 in the United States requires child-resistant packaging for over-the-counter (OTC) and prescription drugs, including aspirin and acetaminophen. However, there are exclusions provided for convenience packages intended for elderly patients or others who may have difficulty opening child-resistant packaging. These exceptions state that manufacturers can produce a percentage of containers without child locks, typically marked as "arthritis-friendly" or with similar indications that they are easier to open. Therefore, the correct answer would be d) Only aspirin containers without child-resistant packaging, as acetaminophen containers are not mentioned in such exemptions.