Propaganda would not be the correct answer, as propaganda is biased information, usually used to promote a political point of view towards the public. This definition does not match with the question.
Recruiting would not be the correct answer, as recruiting is when you enlist someone into the army. This definition does not match with the question.
Rationing would not be the correct answer, as rationing generally means saving a limited amount of something by allowing each person to have a certain amount. This definition does not match with the question.
Mobilization would be the correct answer, as mobilization is the government preparing troops for things like war. This definition does in fact match with the question.