Why don't u look it up in the dictionary and see ?
The language must be appropriate to the audience and should use the terms that are most current and ordinary. Using fancy language is not ordinary, and any kind of unfamiliarity can be seen as suspicious.
bc of the word answer "will you please answer the phone" im going to go with B. transitive
Vanquished means to be conquered or defeated, so it is B. You could say the ememy has been vanquished or conquered.
