\fQuestion T hot yet answered Marked out of 1.00 '2' Flag question Which observation is valid for all cathode rays? Select one: C) a. The can be polarized by refraction. O b. They are positively charged. 0 c. They have the properties of electrons. C) d. They travel at the speed of light. Question 8 Bohr postulated quantized atomic orbits by suggesting that observed line spectra correspond to Not yet answered Select one: Marked out of 1.00 O a. Energy absorption or emission when electrons make a transition between stationary states. Flag question O b. The energies of each electron in the atom O c. Energies created by combining protons and neutrons in the nucleus O d. The resonant transfer of energies between electrons and protons