Question

the polio vaccine is created by denaturing the viral dna with radiation. the outer protein coat is used to develop a vaccine. this shell contains recognizable antigens on its surface that generates an immune response but does not cause disease. to which class does this vaccine belong? live, attenuated viral vector inactivated subunit

Explanation:

Inactivated vaccines are made by killing the disease - causing microorganism (in this case, the virus) while keeping its antigens intact. The polio vaccine described here has its DNA denatured (killed) by radiation, but the outer protein coat (which has antigens) is used. This is characteristic of an inactivated vaccine.
Live - attenuated vaccines use a weakened form of the live pathogen. Viral vector vaccines use a different virus as a vector to deliver the antigen - coding material. Subunit vaccines use only a part of the pathogen (like a single protein), but here the whole viral coat (though inactivated) is used.

Answer:

inactivated