Final answer:
Bryan's parents are using the permissive parenting style, characterized by few demands, nurturing, and lack of discipline. This style can lead to negative outcomes for the child.
Step-by-step explanation:
Bryan's parents who give him anything he wants and do not expect anything from him are using the permissive parenting style, as described by Diana Baumrind. In this style, parents make few demands, rarely use punishment, and tend to be very nurturing and loving. They may play the role of friend rather than parent. This permissive parenting style can result in children lacking self-discipline and having negative outcomes such as lower grades, risky behaviors, and disruptive behaviors.