Which of these is a controllable risk factors for disease? a)poverty b)climate c)age d)vaccination

The answer is: D. Vaccination

Risk factors is considered to be 'contrrolable' if people generally had the power to either prevent it or eliminate it.

Vaccines is considered to bea  controllable risk factors since most people had the power capability to do it (in non-thrid world countries at least), and it manag to prevent wide variety of fatal disease from occuring in the first place.