What are changes that might lead a woman to suspect she is pregnant called?

The correct choice highlights that changes which could lead a woman to suspect she is pregnant are referred to as "presumptive signs." These signs are symptoms that a woman may experience, indicating a potential pregnancy but are not definitive proof on their own. Examples of presumptive signs include missed menstrual periods, breast tenderness, nausea, and fatigue. They are subjective and based on the woman's perception and experiences, which is why they are termed as "presumptive."

In contrast, probable signs would refer to findings that a healthcare provider might identify during a physical examination or through diagnostic methods but are still not definitive. Diagnostic signs, on the other hand, typically involve medical tests or imaging that conclusively confirm pregnancy, such as the presence of hCG in urine or blood tests. Certainty signs are not a recognized term in the context of pregnancy classification. By understanding these distinctions, it becomes clear that the term "presumptive signs" accurately encompasses the initial changes that may lead a woman to suspect pregnancy.