Final answer:
Sharon's approach to conflict, which revolves around winning arguments with one clear winner, is described as a competitive orientation to conflict resolution.
Step-by-step explanation:
The orientation to conflict described by Sharon's statement, where she indicates a preference not to lose arguments and implicates that disagreements result in a single winner, is best characterized as competition. This competitive approach to conflict resolution implies that one party wins at the expense of the other, rather than seeking a mutually beneficial outcome or avoiding the conflict altogether.