Concept: The speaker is overwhelmed with joy after surviving the storm and reuniting with a loved one.
Explanation:The speaker calls the peace after the tempest "such calms" and is so content that he is willing to face worse storms.
He says that if he were to die at this moment, he would die "most happy" because his soul has "content so absolute."
This kind of perfect happiness does not come from adventure or battle but from emotional fulfilment.
The speaker is greeting his beloved after the danger at sea, and his words express deep love and joy at their reunion.
So, his "content" is the result of the deep affection he feels for his wife.
Answer: B. affection for his wife