I think I can help. What exatly do you need help with???
The correct answer is <em>vain</em>.
A vain person is a person who is too pleased with themselves, and <em>vain</em> and <em>conceited</em> are synonyms (words which have the same meaning and can be used interchangeably).
Modest, which means, not proud, or believing that one isn't important, is synonymous with humble and these two words can also be used interchangeably.
D.) I would have to say D
The answer is A.Iambic tetrameter. Because it has rhythm and each line only has 8 syllables.