Final answer:
When a police officer is subpoenaed by the defense in court, they should comply with the subpoena and testify truthfully.
Step-by-step explanation:
When a police officer is subpoenaed by the defense in court, the officer should comply with the subpoena and testify truthfully (option b).
The right of those accused of crimes to present witnesses in their own defense is guaranteed by the sixth amendment. This includes the ability to summon a police officer as a witness on the defendant's behalf. If the officer receives a subpoena from the defense, they are legally obligated to appear in court and provide truthful testimony.
While the defense attorney may ask the officer questions that support the defendant's case, it is crucial for the officer to remain impartial and provide only truthful information.