Which of the following is NOT an example of the five categories of murder?

The correct answer is based on the classification of murders into categories that typically encompass motives or circumstances surrounding the act. The five established categories of murder often include types such as premeditated, felony, and emotional, among others.

Choosing “anger” as a category can be misleading because while emotions can play a significant role in crimes of passion, it doesn't categorize murders in the same concrete way that the established categories do. Anger may be an influencing factor or motive but isn't classified as a category of murder on its own.

On the other hand, the other choices relate more to recognized classifications. "Benefit" would indicate a murder committed for gain, "emotional" can be seen in crimes driven by strong feelings, and "matter of sex" implies a motive linked to sexual greed or obsession. Each of these reflects a distinct motive or circumstance in recognized categories of murder. Hence, "anger" stands out as not fitting within the traditional categories.