Extradition is the process by which fugitives are returned to the states from which that have fled this is a example of

interstate cooperation

Explanation:

Extradition results as two states agree in the process of relocating a fugitive, to its country of origin or where the main charges and accusations are held. The extradition process is foretold by treaty agreements, also called interstate rendition.

The extradition request results from the charges arising due to offenses to be judged by the courts of the country requesting the prisoner.

Generally offenses are high a sending back a person is usually negotiated if it has big political connotations.

In some cases, prisoners are also held in the country for political reasons.

The trials of the other country can dictate a different sentence and also offer some exceptional protection if a political figure is held.

Some recent examples:

Russia denied Edward Snowden to the United States, offering him asylum in 2013.

On the contrary, Mexican government extradited drug lord Joaquin "El Chapo" GuzmanUnited States, facing now his charges.

the answer is choice (b)