A nurse is assessing a client who has been taking sertraline for 2 weeks. The nurse should identify which of the following findings as an indication that the medication is effective?

A. The client reports increase in mood.: Sertraline is a selective serotonin reuptake inhibitor (SSRI) used to treat depression and anxiety. One of the primary indications of effectiveness is an improvement in mood. After 2 weeks, the client should begin to experience some improvement in symptoms of depression, such as an increase in mood. B. The client's blood pressure is within the expected reference range.: SSRIs like sertraline do not affect blood pressure significantly, blood pressure normalization is not the primary therapeutic goal of sertraline. C. The client reports a recent weight loss.: Weight loss is not typically a therapeutic effect of sertraline. Some SSRIs can cause weight changes, but weight loss is not the goal of treatment, and it may not indicate effectiveness in managing depression or anxiety. D. The client's legs are not swollen.: While swelling in the legs can be a side effect of some medications, it is not an indication of the effectiveness of sertraline. The primary indicator of effectiveness is symptom improvement in mood and behaviour.