D. "his sister, who had taken a sales job, learned shorthand and French in the evenings so that she might be able to get a better position later on"
You would use a comma. The semi colon acts when both what is in front and behind it can stand alone as a sentence. “With technology in the hands of so many people” does not make sense standing alone.
Students would be the subject because they are the ones doing the action. Questions is the direct object, and Elsa is the indirect object
She or he must possess developmental editing skills. Must be creative, imaginative.