Pretty sure it’s contemplative
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).
<span>In his short story "The Monkey's Paw." Mr White having seen a fatal mistake after it was to late was amiably desirous of presenting his son from seeing it.( his move during their chess game) </span><span />