Which of the following describes a lack of focus due to emotional disturbance?

The term "distrait" specifically refers to a state of being distracted or absent-minded, often due to emotional upheaval or distress. When someone is described as distrait, it implies that their mental focus is compromised because their thoughts are preoccupied with emotional disturbances. This aligns closely with the requirement of the question, which asks for a description of a lack of focus stemming from emotional disturbance.

In contrast, "disheveled" generally pertains to physical untidiness or disorder, which does not relate to mental focus or emotional state. "Flustered" indicates a state of agitation or confusion, often tied to busy situations, rather than an emotional disturbance affecting focus. "Inattentive" indicates a general lack of attention, but it does not specifically imply that this lack arises from an emotional issue. Thus, the choice of "distrait" most accurately captures the nuance of emotional distraction impacting focus.