See Question 10 in the image.
He was to be loyal to his lord, courageous in his defense, and a (10) savvy person. Basically, he was to be a man of honor, who would stay true to his Christian faith and keep his word at all costs.
Here option B) perspicacious sage, is considered incorrect because it has a very complex language, which is not required for this passage.
On the other hand, savvy person, C) wise advisor, and D) master mind are very similar to each other. These choices are even of normal tone.
I tried to apply to the concept of parallelism and comparisons here: we are talking about a human (Man), so let's put man (savvy person) for right comparison and not bring mind and advisor here. However, I got it wrong. The correct answer is C.
I have no ideas. Please help me here