<span>A. We selected Ellen as manager for several reasons</span>
In "The problem with Bullies", the epidemic of bullying Illustrates the effect of bullying on both victims and bullies such as depression, get into fights, and harassing others.
Hope this helps!
I think it is <span>A. </span><span>adjective clause</span>. Because we have here relative pronoun "who" that plays a role of a subject.
<span>b.It is not possible to make a career out of a hobby.</span>
Green is an adjective in the first one, so put it as a noun. "Green is the mixture of blue and yellow."