Final answer:
Recurrent abortion is characterized by the loss of three or more consecutive pregnancies.
Step-by-step explanation:
The term recurrent abortion refers to the occurrence of multiple successive spontaneous abortions. According to the medical definition, recurrent abortion is typically characterized by the loss of three or more consecutive pregnancies. This is statistically significant because having two miscarriages is still within the range of chance for many couples, but three or more miscarriages suggest an underlying issue that could be genetic, anatomic, immunologic, or hormonal.
Therefore, the correct answer to the student's question would be B. Three.