Final answer:
The most accurate statement regarding the probable signs of pregnancy is d. Confirmed by diagnostic tests. Diagnostic tests, such as blood tests or urine tests, are used to confirm pregnancy.
Step-by-step explanation:
The most accurate statement regarding the probable signs of pregnancy is d. Confirmed by diagnostic tests. Probable signs of pregnancy refer to the physical changes that suggest a woman may be pregnant, but they do not confirm pregnancy conclusively. Diagnostic tests, such as blood tests or urine tests, are used to confirm pregnancy. Ultrasound imaging, which is used to visualize the fetus and the reproductive organs, may help determine the viability of the pregnancy and provide additional information during prenatal care.