How can the tracking of Sudafed purchases be bypassed?

The correct answer highlights a scenario where the tracking of Sudafed purchases can be bypassed when a licensed medical doctor (MD) writes a prescription for the medication. In this context, the necessity for tracking is less stringent because prescriptions are part of a controlled process that involves a healthcare provider assessing a patient's medical needs. When a prescription is issued, the transaction is recorded in the pharmacy's system, but it does not require the same level of tracking as over-the-counter sales do under federal and state regulations, which aim to combat the illegal production of methamphetamine.

This mechanism allows medical professionals to provide patients with Sudafed for legitimate health reasons without imposing the same restrictions placed on retail sales aimed at consumers directly. It acknowledges the right of healthcare providers to prescribe medications based on their clinical judgments and patient needs.

The other choices do not effectively bypass the tracking requirements imposed on Sudafed purchases. Paying in cash does not eliminate the need to adhere to regulations; transactions still need to be logged. Purchases below a certain amount may still require tracking, particularly for sensitive medications like Sudafed. Presenting a government ID is actually a requirement to monitor and limit access to the product, further supporting the need for tracking rather than bypassing it.