A modest fixed blade with a drop point, around three to four inches, in a corrosion-resistant steel that is easy to sharpen in the field. 420HC is the classic answer and Buck built a reputation on it. Skip the gut hook and the enormous survival blade; neither helps a beginner.
Field dressing is wet, slippery work and a folder's pivot fills with material that is unpleasant to clean out. A full tang fixed blade has nothing to clog and nothing to close on a hand.
Three to four inches is plenty. Long blades are harder to control inside a body cavity, which is the opposite of what the job needs.
A drop point has a strong tip that will not puncture what is behind it and enough belly to skin properly. It is the standard hunting profile.
For steel, prioritize corrosion resistance and easy field sharpening over edge retention. 420HC is the classic hunting answer for exactly that reason, and Buck's heat treat gets more out of it than the specification suggests.
A gut hook, unless they have asked for one. It needs its own sharpener and many hunters never use it. Also skip the very large multi-purpose survival knife, which is a worse tool for every actual hunting task.
Add a small sharpener and a proper sheath instead. Both get used.