Which one of the following underlying motives would be least likely to prompt Harry Boyle to commit insurance fraud?

The motive that is least likely to prompt Harry Boyle to commit insurance fraud is tied to personal relationships that involve seeking to avoid discomfort or annoyance, such as keeping his wife from nagging him. While personal motivations can sometimes influence behavior, they typically revolve around more tangible needs or pressures.

The other options involve concrete financial responsibilities or desires, such as dental work, a car for his son, or accommodations for a mother-in-law, which all imply a direct and pressing need for financial resources. In contrast, the motivation related to his wife reflects a desire to evade interpersonal conflict rather than a critical financial obligation. Thus, this motive lacks the urgency or necessity that typically drives individuals to commit insurance fraud.