Final answer:
The adult male's burial at horn shelter 2 included a variety of individuals of different ages and sexes. One of the bodies found in the burial had a set of buttons located under the right collarbone.
Step-by-step explanation:
The adult male's burial at horn shelter 2 included at least ten individuals. Among them, there was a child aged between seven and twelve, an individual of indeterminate sex between seventeen and twenty-five years old, three men and a woman aged between twenty-five and thirty-five years, two men aged forty and fifty, and one adult individual of indeterminate sex. One of the bodies found in the burial had a set of five buttons located under the right collarbone.