I am PRETTY sure it mean's that someone killed a person from that person's family.
Sorry if I am wrong.
The answer is B. cold-blooded
A. Metaphor
A metaphor is a direct comparison
Grammar errors DO create confusion and will detract from the message the author is trying to provide (unless the errors are intentional and are meant to contribute to the meaning of the written work in very rare cases).
Hope this helps! :)
