Which radiation detection device is the best to use for measuring the presence of radiation in large moving objects where constant monitoring is impossible? film badge geiger counter cloud chamber scintillation counter

The answer is A, film badge. I just took the test on edginuity 

Answer;

Film badge

Explanation;A film badge is used in monitoring the amount of cumulative radiation dose as a result of ionizing radiations.  The badge is worn on the outside of clothing, around the chest to represent dose to the entire body.A film badge comprises of a photographic film and a holder. This film badge is used to determine or measure and record the radiation exposure as a result of radiations, x-rays, gamma rays and also beta particles. The holder contains filters whose purpose is to attenuate radiation such that their types and energies can be differentiated.