4. concurrent jurisdiction allows for which court(s) to hear a case? (1)

Concurrent Jurisdiction allows state and federal courts to hear the case.

Explanation:

Concurrent Jurisdiction means the authority to hear  a civil or a criminal case by more than one court. The states courts have the right to hear the case dealt by the federal courts too in US. It can also exist in different levels of state courts, familial courts and other government agencies. It can also make some determinations on the outcome of the case by both state and federal courts.

Mostly state courts have general Jurisdiction which it hears the cases if the residents by implementing the corresponding state laws. federal courts most often deal with the cases which may  be of national significance. Diversity Jurisdiction exists when the parties of different states fall in a dispute which may involve more than ten thousand US Dollars.

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i believe the answer is d.