To check for a torn ligament, it would be best to use

Ultrasound. Using sound waves to visualise internal structures, ultrasound may be used to check for injuries in the ligaments, tendons and muscles of the knee.

Explanation:

you did not attach the discourse, but i assume it to be the discourse on the origin and basis of inequality among men (the original titile in french is: "discours sur l'origine et les fondements de l'inégalité parmi les hommes"), also know as "second discourse". in this discourse, jean-jacques rousseau emphasizes that private property is the basis of all inequalities.

therefore, what enabled the old regime to maintain as long as it did was private property.

energy and particles