Final answer:
The correct representation of a nuclear fission equation for uranium-238 is option A) 238U + 1n → 239U + γ.
Step-by-step explanation:
The correct representation of a nuclear fission equation for uranium-238 is option A) 238U + 1n → 239U + γ. This equation shows that when a neutron (1n) collides with uranium-238 (238U), it results in the formation of uranium-239 (239U) and the release of a gamma ray (γ).