Which statement best describes the fruit of the poisonous tree doctrine?

Which statement best describes the fruit of the poisonous tree doctrine?

• A. Prohibits admission of evidence derived from illegally obtained evidence
• B. Allows derivative evidence if the initial evidence is illegal
• C. Only applies to physical evidence
• D. Applies only in federal courts

Answer: (A)

The main idea tested here is that evidence obtained through illegal government action is not just barred itself, but anything discovered as a result of that illegal source is also barred. This is the fruit of the poisonous tree concept: the illegal root taints the entire branch that grows from it. Why this is the best description: the doctrine extends the exclusionary rule beyond the initial unlawfully obtained material to derivative evidence. If the initial evidence was obtained in violation of the Fourth Amendment, courts typically suppress evidence that was obtained as a direct consequence of that illegality, to deter unlawful police conduct and to preserve judicial integrity. There are narrow exceptions, such as if the derivative evidence can be shown to have an independent lawful source, if it would have been discovered anyway through inevitable discovery, or if the link to the illegality has been sufficiently attenuated. But the core principle remains: you don’t admit derivative evidence simply because the original evidence happened to be illegal. This doctrine is not limited to physical items; it covers a broad range of evidence, including statements and other forms of information, and it applies in both federal and state courts. The other statements misstate the scope or applicability: derivative evidence is not routinely permitted because the initial evidence was illegal; it does not apply only to physical evidence; and it does not restrict the doctrine to federal courts alone.

The main idea tested here is that evidence obtained through illegal government action is not just barred itself, but anything discovered as a result of that illegal source is also barred. This is the fruit of the poisonous tree concept: the illegal root taints the entire branch that grows from it.

Why this is the best description: the doctrine extends the exclusionary rule beyond the initial unlawfully obtained material to derivative evidence. If the initial evidence was obtained in violation of the Fourth Amendment, courts typically suppress evidence that was obtained as a direct consequence of that illegality, to deter unlawful police conduct and to preserve judicial integrity. There are narrow exceptions, such as if the derivative evidence can be shown to have an independent lawful source, if it would have been discovered anyway through inevitable discovery, or if the link to the illegality has been sufficiently attenuated. But the core principle remains: you don’t admit derivative evidence simply because the original evidence happened to be illegal.

This doctrine is not limited to physical items; it covers a broad range of evidence, including statements and other forms of information, and it applies in both federal and state courts. The other statements misstate the scope or applicability: derivative evidence is not routinely permitted because the initial evidence was illegal; it does not apply only to physical evidence; and it does not restrict the doctrine to federal courts alone.