Final answer:
The LP/VN can exercise political voice best by writing a letter or email to their representatives in government and expressing their concerns. They can also join advocacy groups like AARP to fight for lower healthcare costs.
Step-by-step explanation:
The licensed practical/vocational nurse (LP/VN) can exercise political voice best by writing a letter or email to their representatives in government about the concern regarding recent changes in legislation affecting prescription coverage. By contacting their elected officials, the LP/VN can express their concerns and advocate for changes that would make medications more affordable for patients in the geriatric clinic. They can also join advocacy groups like AARP that work to influence public policy and fight for lower healthcare costs.