If read from the context, the word amiability would mean joviality, so Answer B would be correct.
I would choose the last choice, D. Adverbial.
Adverbial phrases include two or more words that serve as adverbs. So "in an hour or two" can be classified as an adverb phrase.
A. unaffected as it is not a magnetic substance
Answer: the dictionary definition of the word
Explanation: