Passage Summary: An astrologer argues that when scientists say there's no link between stars and personality, they are overstepping. The astrologer's reason is that science can't even define personality well enough to rule out such connections.

Conclusion: The scientists' claim that there is no link between astrological signs and personality is not scientifically supported.

Reasoning: Because science lacks specific standards for defining personality types, it is impossible for scientific research to disprove a connection between personality and other factors.

Analysis: This is a 'Role in Argument' question, so we need to map out the structure without worrying about whether the astrologer is actually right. The statement in question acts as a premise that supports the main conclusion. Specifically, it is a generalization used to justify why the scientists' specific claim about astrology is 'unjustified.' Notice how the astrologer moves from a broad limitation of science to a specific critique of a scientific claim.