Hey there!
"A great lion of a warrior" is an example of a metaphor.
It wouldn't be a simile because a simile is a sentence that uses the words "like" or "as", it wouldn't be a couplet because a couplet are two lines that rhyme.
Final answer:
The first option.
Hope this helps you.
Have a great day!
B because the word very is showing how well he is smart and helping to explain.
"Dynamic" would be the best option from the list in terms of a word that best describes the English language. This is because the English language, like many other languages, is always evolving and changing.