Given-a-5-keV-electron-beam-and-a-6-MeV-electron-beam-which-one-has-a-higher-LETn-A-Both-have-identical-LETn-B-The-5-keV-electron-beamn-C-The-6-MeV-electron-beam

The 6 MeV electron beam has a higher LET (Linear Energy Transfer) as compared to the 5 keV electron beam. This is because higher energy electrons have a higher penetration power and can cause more ionization events as they travel through the material, resulting in a higher LET. Therefore, the correct answer is option C.