This ghost hunter claims that there is a ghost in the home. Is this a scientific claim? Why or why not?

No

Explanation:

A scientific claim is based on evidence and usually made by scientist. Assuming this ghost hunter is a scientist we still don't have any evidence besides the fact the he witnessed it which is a weak answer. If there were witnesses or if he has pictures/proof of the ghost then it will be a scientific claim.

she is later raised by him and his wife, madame valmonde, who sees her as gift from god, as the couple cannot have their own children. later, desiree falls in love with a wealthy man, armand aubigny, and they get married.

its probably fingerprint or personality