Is it necessary to Instantiate a Template? $($one correct answer$)$

Yes, because you link the Template to a TestSheet during Instantiation

No$,$ I can link a Template to an ExecutionList and the $\{xL[]\}$ References are translated during runtime

No$,$ this is done automatically by Tosca during runtime

Yes, because $\{xL[]\}$ References are only translated during Instantiation