In the context of decision support system framework developed by anthony gorry and michael scott morton, one characteristic of a structured decision is that

Based on Anthony Gorry and Michael Scott Morton’s context of Decision Support System Framework, one of structured decision’s characteristic is that only some of the variables are measured. Structured decisions usually have methodology which are well defined in solution-finding and have the data to reach decisions. They are usually made on regular basis and are straightforward.  

answer; (d) one tectonic plate plunges beneath another; (most common,convergent boundaries)

if im not mistaken its a. collective emotional arousal