A Procedure in Which a Thin Needle Is Inserted Directly

question 11

Multiple Choice

A procedure in which a thin needle is inserted directly into the common bile duct is called:

• A) surgical cholangiography.
• B) T-tube cholangiography.
• C) intravenous cholangiography
• D) percutaneous transhepatic cholangiography.

---

Definitions:

Pure Monopolist

A sole provider of a unique product or service with no close substitutes, giving it the ability to control market prices.

Natural Monopoly

A condition in which a single firm can produce the entire output of a market at a lower cost than what it would be if there were multiple firms.

Socially Optimal Pricing

Pricing strategies aimed at maximizing societal welfare rather than corporate profits, emphasizing fairness and accessibility.

Marginal Cost

The cost of producing one additional unit of a product, important for decision-making in economics and business.