It is boring and has no color
Answer:
C) as if there had been some magic power in the vigorousness
as if there had been some magic power in the vigorousnessof his speech
When you enumerate you need to put comas between all the items except the ones which are connected by "and" : as A is not correct as it does not have comas, and B is incorrect as it has comas where "and" is.
now, in a way both C and D are correct, but C is the usual accepted version, and D is an example of "Oxford coma" (where the coma is optional, to remain on the safe side, choose C).
I would think it would be A
Answer:
I believe the correct answer would be , C .(: