I would say a), c) and d) all represent potential ethical issues and becoming aware of the mistake and misquote means that they must be reported immediately ie use full disclosure and for referring a friend for a job interview could be considered conflict of interest.
Answer:
Focus
Explanation:
to specialize in a subject is to focus and study it.
A rip sighn if there is one and and ok sighn cause in his life he did a great job
The meaning Malevolent would be answer D: Vicious