Answer: Intergenerational equity
Explanation: Equity simply preaches fairness whereby the allocation and sharing of resources, privilege and other related issues is devoid of partiality. Intergenerational equity looks into the idea of fairness between members of certain generations and age groups whereby the resource allocation and privilege afforded to individuals is devoid of favoritism on the basis of age group or generation. In the scenario above, Carl is of the opinion that intergenerational equity should be in play such that benefits afforded to elderly also incorporates the youth.