Which of the following is NOT a method of voting?

Open discussion is not a method of voting; rather, it is a process that allows members to share their opinions, debate issues, and offer points of view before a vote takes place. During open discussions, participants can articulate their thoughts on a particular topic, which may influence how they vote, but this process does not directly lead to a decision or a vote itself.

In contrast, methods like standing, voice, and secret ballot are all recognized ways to conduct a vote. Standing voting involves participants physically rising to indicate their choice, voice voting allows members to express their preference verbally, and secret ballot ensures privacy in the decision-making process by allowing individuals to cast votes anonymously. Each of these methods has its own appropriate context and can be used to gauge the opinion of a group efficiently.