Final answer:
Individuals aged 12 through 29 in Nebraska need both a valid hunting license and a hunter education course completion to hunt deer with a bow and arrow or firearm.
Step-by-step explanation:
In Nebraska, individuals aged 12 through 29 who wish to hunt deer with a bow and arrow or firearm are required to have both a valid hunting license and proof of completion of a hunter education course. This means that the correct answer is (c) Both a valid hunting license and completion of a hunter education course. The hunter education course is essential for educating young hunters about safety, ethics, wildlife management, and conservation. The hunting license grants the legal right to hunt within the state of Nebraska.