Answer:
Provisional or temporary cements play an important role in restorative dentistry. They are used for the cementation of temporary indirect restorations including crowns, fixed partial dentures (FPDs), and inlays and onlays, as well as for temporary cementation of definitive restorations of the same types.
I believe the answer is A.) because when the author says e innocent of this knowledge" it is kind of like when a child asks their parent something and the parent says "Don worry it" it is as if they are trying not to burden their child with the knoledge of what is happening in the world around them.
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