The prefix a- means not, so it probably means it's not synergic.
Answer:
In the poem, the speaker seems to be discussing a pleasant date, as if oblivious to the fact that this is a journey to death. The tone of the poem seems light and perhaps even dismissive of all the scenes passing by, as though these cornerstones of life were not terribly significant. However, the underlying mood of the poem is somewhat sad because the speaker is describing a world she’s leaving behind. This difference between the descriptions of the outing and of dying creates some dramatic irony. The speaker sees but doesn’t really see the world of the living because she’s already dead.
Explanation:
This is the exact from Edmentum so make sure to change it up a little.
This sentence is a Compound complex (D). As it is made up of:
1) A compound sentence which consists of two independent clauses join by the conjunction “so”.
2) A complex sentence which consist of main clause and a dependant clause. These clauses are join and related with the subordinating conjunction “unless”