Final answer:
The Bail Reform Act of 1966 allows courts to deny bail if the defendant poses a flight risk or danger to the community. Being poor or having a family member in jail is not a valid reason to deny bail, but affiliation with a criminal organization may lead to bail denial.
Step-by-step explanation:
The Bail Reform Act of 1966 allows the court to deny bail under certain circumstances. The court can deny bail if there is a significant risk of the defendant fleeing or if the defendant poses a risk to the community.
Being poor and not having any money (A) is not a valid reason to deny bail. Promising to "obey all laws" (B) does not necessarily guarantee bail if the court believes there is still a risk of flight or danger. Having a family member who is in jail (C) does not influence the decision to grant or deny bail.
However, if a defendant is a member of a criminal organization (D), the court may consider this as a potential risk factor and decide to deny bail.
The Bail Reform Act of 1966 provides the court with the ability to deny bail under certain circumstances. One of these circumstances is when a defendant is a member of a criminal organization (option D). This is because individuals associated with criminal organizations are considered to be at a higher risk of committing further crimes if released on bail.
Therefore answer is D) A defendant is a member of a criminal organization.