Even though the plot was successful, Thor was embarrassed because he
A had allowed himself to be disguised as a woman.
B had kissed the giant so as not to undermine the plot.
C had eaten so much food at the banquet.
D had been caught stealing the wedding gift.
The correct answer is A: Thor was embarrassed because he had allowed himself to be disguised as a woman.
In the story, Thor disguises himself as the goddess Freyja to retrieve his stolen hammer, Mjölnir. This disguise is awkward for him, as it contradicts his masculine identity, leading to his embarrassment throughout the plot. If you have any more questions or need further assistance, feel free to ask!