Final answer:
The presence of urine ketones is a manifestation of hyperemesis gravidarum.
Step-by-step explanation:
Hyperemesis gravidarum is a condition of severe nausea and vomiting during pregnancy that can lead to dehydration and weight loss. One of the manifestations of this condition is the presence of urine ketones. Ketones are produced when the body breaks down fat for energy, and their presence in the urine indicates that the body is using fat as a fuel source due to a lack of glucose.
In this case, the correct answer is B. Urine ketones present.