What does her behavior in the office indicate?

The selected answer accurately reflects a negative assessment of her productivity in the office. It suggests that her primary activity consists solely of sitting around and drinking coffee, implying a lack of engagement or contribution to the work environment. This indicates a perception of inactivity, as her behavior does not show any additional responsibilities or tasks beyond consuming coffee.

The other options present varying interpretations that either introduce an element of work, suggest a different task, or entirely negate the action of drinking coffee, which doesn't align with the implication of the behavior described in the question. By focusing solely on her drinking coffee without any additional responsibilities, the chosen answer encapsulates the overall message conveyed by her behavior in the office.