an effective claim for an argumentative essay is\npassionate and intense.\nflexible and open…

Answer:

precise and knowledgeable.

Brief Explanations:

An effective claim in an argumentative essay should be clear - precise to convey a definite stance, and knowledgeable to show understanding of the topic. It cannot be too open - ended, non - specific, or undefined as it needs to provide a clear direction for the argument. Also, while passion can be part of the writing tone, the claim itself should be based on precision and knowledge.