I believe that the first answer, recovering from love, is correct. Because he could not recover his love, which is sometimes referred to as a fire, he is sad or in emotional pain.
I think the answer to this should be A.
1. Ducks swim, fly, walk, and fly
2. They quack when they are hungry, mad, or surprised.
3. Justin said no eating, drinking, or running in the house.
4. Not only was the monster was huge, but it smelled, was slimey, and loud.
Authors often vary the types of phrases and clauses they use in order to add interest to their writing