When considering a purchase of a two-year supply of a popular antibiotic, which of the following is a legal activity?

The purchase of that quantity of the antibiotic is a legal activity because it aligns with regulations surrounding the distribution and use of prescription medications. In many jurisdictions, healthcare providers and pharmacies are allowed to order and stock a reasonable quantity of medications to meet patient demand, particularly for essential drugs such as antibiotics.

This choice underscores the importance of maintaining a sufficient supply of necessary medications while adhering to legal requirements. It represents the balance between ensuring access to important treatments and protecting the integrity of the pharmaceutical distribution system by ensuring that all transactions are conducted through authorized channels.

The other options involve either excessive purchasing without limits, which could raise concerns about stockpiling and misuse, or acquiring medications from unauthorized sources, which poses significant risks to patient safety and legality. Additionally, consistently buying only a single prescription at a time could hinder proper care and accessibility for patients who genuinely require the medication.