What is the process called that determines the physical condition of pregnancy in animals without visual observation?

The correct answer is "Pregnancy Testing." This term specifically refers to the various methods used to determine if an animal is pregnant without relying on visual observations. Pregnancy testing can involve several techniques, including blood tests to measure hormone levels (like progesterone or relaxin) or ultrasound examinations that detect fetal development. These methods provide a more definitive assessment of pregnancy status compared to informal observations or assessments.

Other options do not fully capture the specificity of this process. For instance, "Gestation Assessment" generally refers to monitoring the progress of pregnancy over time, which assumes a pregnancy is already confirmed. "Step Analysis" is not a recognized term in veterinary medicine concerning pregnancy determination and likely does not refer to any standard procedure. "Clinical Inspection" typically involves a physical examination of the animal, which may include visual cues and palpation but does not encompass the biochemical or diagnostic testing used in pregnancy testing. Thus, pregnancy testing is the most accurate term for the described process.