The line that best paraphrases the excerpt is A. And when I think that I’ll never see you again, beautiful creature (...).
To paraphrase is to express the meaning of something by rewording it in a different way. Both the excerpt and option A express the same: that the poet is considering the possibility of never looking at the beautiful "creature" again.
Here are two examples : '' So Carnehan loaded the mules with the rifles that was taken off the camels, and together we starts forward into those bitter cold mountainous parts, and never a road broader than the back of your hand.''
'' My eye could detect no failure in the disguises. The scene in the Serai attested that they were complete to the native mind. There was just the chance, therefore, that Carnehan and Dravot would be able to wander through Afghanistan without detection.''
The action of Carnehan preparing things for his journey show that they are taking this adventure seriously and truly wish to accomplish their goal of becoming kings. Although they had trials and tribulations to face, they are stepping up to the plate and conquering them.