(d) The most appropriate word that would fill the blank is'discretion' which means the freedom to decide whatshould be done in a particular situation. All the otherwords do not fill the blank appropriately, hence option(d) is the most suitable answer choice. Omission meanssomeone or something that has been left out orexcluded. Affairs means an event or sequence ofevents of a specified kind or that has previously beenreferred to.