A 35-year-old female presents to your office and begins to divulge her frequent worries: ever since she was young she was worried someone close to her would die in a freak accident. As she grew older, this worry was exacerbated by the fear that she would pass away without telling her friends and family how important they are to her. Additionally, once she had children, she became so worried for their safety that she rarely lets them leave the house. Furthermore, she has constant worries about how things will work out for her in the future, and recently experienced a panic attack. How might you currently diagnose this patient?

a) Generalized Anxiety Disorder (GAD)
b) Panic Disorder
c) Obsessive-Compulsive Disorder (OCD)
d) Posttraumatic Stress Disorder (PTSD)