Answer:
<em>He</em><em> </em><em>is</em><em> </em><em>g</em><em>oing</em><em> to</em><em> </em><em>sch</em><em>ool</em><em> </em><em>hop</em><em>e</em><em> </em><em>it</em><em> </em><em>h</em><em>elps</em>
The option that best describes the cause-and-effect structure in a memoir is when the structure focuses on an incident and its consequences.
I would say that the correct option is the third one.
The cause is the incident, and the effect are its consequences.