Question

The bile secreted by the liver passes into the gallbladder through
A) Hepato-pancreatic duct
B) Cystic duct
C) Hepatic duct
D) Hepato-gall duct

Answer 1

1. Bile (from the Latin bilis), also known as gall, is a dark-green to yellowish-brown fluid released by the liver of most vertebrates that aids lipid digestion in the small intestine.
2. Bile is actively produced by the liver (liver bile) in humans and processed and collected in the gallbladder.
3. This accumulated bile is released into the duodenum after feeding.

Complete answer
Bile is collected by a chain of ducts that pass from the liver into the right and left hepatic ducts as the liver cells secrete bile. These ducts eventually empty into the common hepatic duct. The common bile duct is formed where the common hepatic duct connects with the cystic duct from the gallbladder. This connects the liver to the duodenum (the first section of the small intestine). However, not all bile enters the duodenum directly. The gallbladder stores approximately 50% of the bile released by the liver. This pear-shaped organ is found just under the liver. When food is consumed, the gallbladder contracts and releases accumulated bile into the duodenum to aid in digestion.
Option A is hepato-pancreatic duct which connects the liver to the pancreas. Hence this is not correct
Option B is the cystic duct which helps connect the liver and gallbladder. Hence this is the correct option
Option c says hepatic duct which connects with the cystic duct indirectly to reach the gallbladder. Hence this also cannot be approved answer
Option D says hepato-gall duct. There is no such duct named in biology. So, this is also the wrong option

Solution
The liver produces bile juice, which the gallbladder stores and secretes. The cystic duct transports bile from the liver to the gallbladder. The right and left hepatic ducts are connected to form a cystic duct, which connects the liver and gallbladder. Per day, adults contain 400 to 1000 mL of bile. As a result, choice B is the right one.

Note

1. Hepatic bile is composed of (97–$98\%$) water, 0.7 percent [1] bile salts, 0.2 percent bilirubin, 0.51 percent fats (cholesterol, fatty acids, and lecithin), and 200 meq/l inorganic salts.
2. Bilirubin, which is orange-yellow, and its oxidized version, green biliverdin, are the two primary pigments of bile.
3. They are responsible for the brown color of poop when combined. Adult humans contain approximately 400 to 800 milliliters of bile per day.