Final answer:
The Physician's Desk Reference (PDR) is the drug resource that compiles medication package inserts, which contain critical information for healthcare professionals about medicines.
Step-by-step explanation:
The drug resource that is a compilation of medication package inserts is a) Physician's Desk Reference (PDR). The PDR includes FDA-approved labeling information, which pharmaceutical companies are mandated to provide, and it encompasses detailed information about each medication, including indications, contraindications, side effects, and dosage. It is a reference point for healthcare professionals when prescribing medication. Other options, like the Drug Information Handbook, Orange Book, and USP-NF, offer different types of drug-related information. For example, the Orange Book lists approved drug products with therapeutic equivalence evaluations.