Answer:
Ostentatiously lofty in style
Explanation:
Ostentatiously and Bombastic are like synonyms to each other, both meaning very high, flaunting, or intending to impress or brag
The answer C correctly uses possessive form and is the right answer. It's not A because there is only one George so the apostrophe is in the wrong place. In B, there's not even an apostrophe and it's not clear as to whether there is only one cousin or two or more cousins. In answer D, here should not be an apostrophe for develops.
What book
you do relise no one can answer this question with out more info