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!
Answer: B: They launched the shell, which exploded in the air.
Its A, His curiosity hinders him from coming back home