A nurse in an outpatient facility is assessing a client who is prescribed furosemide 40 mg daily, but the client reports she has been taking extra doses to promote weight loss. Which of the following indicates she is dehydrated?

The correct answer is A: Urine specific gravity of 1.035. A urine specific gravity greater than 1.030 indicates dehydration as the kidneys conserve water in response to dehydration. Choice B, oliguria, refers to decreased urine output, which can be a sign of dehydration but is not specific to it. Choice C, increased urine concentration, is a general term and does not directly indicate dehydration. Choice D, dry mucous membranes, can be a sign of dehydration but is not as specific as a urine specific gravity greater than 1.030.