I would say b or c. Tbh if it was me answering I would go with c. Hope this helps!!
C) Faux means fake as in faux fur.
The boy, curious by nature, investigated, but found not a thing.
OMG OMG Once archaeologists determine what the past was like, their ideas never change.
We first need to identify what a superlative form of an adjective is. That is when the adjective is put in a comparison, and is done so in it's higher form. For example, take the adjective "great". The superlative form would be "greatest". That would imply that there are, including the object that the superlative adjective is describing, 3 or more things. So, you use it only when comparing 3 or more nouns.