Which qualities show effectiveness at work? In a last few weeks, Steve has stopped (coordinating, chatting, discussing) with his coworkers during work. He takes short lunch breaks and is (focused, distracted, asleep) while working.
As the question is asking for efectiveness the most effective way to optimize your time at work is keeping the chatting and hanging out with your coworkers at a minimum possible, taking short lunch breaks and being focused while working are examples of being effective at work.
