Courtney is often left to entertain and manage herself. When she approaches her mother, she is brushed aside and made to feel a nuisance. This is an example of which of Baumrind's parenting styles?

Neglectful.

Explanation:

Diana Baumrind developed research on parenting styles in the 1960s.

A parenting style is the approach used by parents in the upbringing of the children.

Baumrind categorized parenting style in four categories:

Authoritarian Neglectful Permissive Authoritative

In Neglectful parenting style, the parents are inattentive and unresponsive towards their children.

In the given example, Courtney's mother's parenting style is neglectful because she 'brush Courtney aside' whenever she approaches her. Which means she is unresponsive and inattentive towards Courtney.

So, the correct answer is "Neglectful" parenting style.