Final answer:
The statement that conscription, conscription allowing paid substitutes, and market systems are three ways to allocate military service is true, according to Michael Sandel.
Step-by-step explanation:
The question pertains to the views of philosopher Michael Sandel on the allocation of military service. According to Sandel, there are indeed several methods that societies have used historically to allocate military service, which can include conscription, permitting paid substitutes in a conscription system, and utilizing market systems to attract volunteers. Conscription or draft compels individuals to serve in the military, and in some cases, individuals could pay for substitutes to take their place. Additionally, market systems involve using economic incentives to recruit volunteers for military service. Therefore, the claim that conscription, conscription allowing paid substitutes, and market systems are three ways to allocate military service is true.