How I can create 3D that have Intelligence how ?

Answer 1

Well, in gaming it's just a pseudo AI. Just create something that imitates a human, and people immediately name it AI, when in fact, it's not even close to human like comprehension, only computations that take in consideration the circumstances. When it comes to 3D graphics in gaming, you should look in to Blender, it'll get you started.

Answer 2

Many advanced subjects. To combine these 2 you first have to learn a lot about 3D Programming. Then jump into Artificial Intelligence. Just then you can look for combining these two

Answer 3

how I can create that and which ways ?

Answer 4

It's probably going to be in OOP language, so you need a class that can process input and responds accordingly. Exact implementation will depend on what your game really needs.