Which of the following conditions is associated with decreased bile flow?

Liver failure is indeed associated with decreased bile flow due to its critical role in bile production and secretion. The liver is responsible for synthesizing bile, which is an essential fluid for the digestion and absorption of fats. When the liver's functionality is compromised, as seen in liver failure, it cannot produce adequate amounts of bile. This can lead to a range of symptoms related to diminished bile flow, such as jaundice, due to the accumulation of bilirubin, a component of bile.

In contrast, hemorrhage does not directly impact bile production; pulmonary embolism primarily affects blood flow to the lungs rather than the liver's bile function; and anaphylactic attacks are allergic reactions that can cause systemic vascular response but do not specifically impact bile secretion from the liver. Therefore, liver failure stands out as the condition that directly results in decreased bile flow, highlighting the importance of liver health in maintaining proper digestive functions.