Answer:
b. were hunters and gatherers.
Step-by-step explanation:
The first inhabitants of the territory that is now New Mexico were Paleo-Indians, the term with which the first settlers in the Americas are known.
In particular, the first culture in New Mexico was the Clovis Culture. This culture was composed of hunter-gatherers who used stone tools for different activites.
They hunted animals like mammoths, bisons, camelops, and horses (which were present in the Americas at the time, and later went exctinct in the continent). They also gathered a great variety of plants to complement their diet.