Answer:
a. extemporaneous
Explanation:
Extemporaneous -
It refers to the method of speaking about a topic in a very fluent manner , without the help of any write up , is referred to as an extempore .
A person who is very good with the art of extempore , is referred to as an extemporaneous .
Hence , from the given scenario of the question ,
Joseph is described to as an extemporaneous person .
I think it might be tetradic but i’m not certain. i hope this is at least slightly helpful but i’m sorry if it’s not
Sweet is the answer to the problem