Answer: means to reduce in thickness on one end than the other
Explanation:
Answer is B. Sonnet
Reason
a sonnet is a poem of fourteen lines using any of a number of formal rhyme schemes, in English typically having ten syllables per line.
I believe it would be B, vanquish. For one to use such a fancy and strong word, would sound as if one were boasting. Example: "The young man brazenly claimed that he had vanquished the massive bear."
B adjective phrase is the correct answer