Please help me with this homework choose the correct sentence

The author attributes papa's unforgivable behavior to which of the following? a. the painful memories connected with his 9-month ordeal in south dakota b. papa's increasing addiction to alcohol c. papa's unfulfilled need to be in charge of something and/or someone d. mama's emotional distance from papa

Ican’t find this question here can y’all tell me the awnser?

According to the study, a is when you string one quote after another in an essay without connecting them