What is treasury bills​

According to this excerpt, a key part of our national security strategy is

There are three factors that can affect the shape of the treasury yield curve (r* t , ip t , and mrp t ) and five factors that can affect the shape of the corporate yield curve (r* t , ip t , mrp t , drp t , and lp t ). the yield curve reflects the aggregation of the impacts from these factors. suppose the real risk-free rate and inflation rate are expected to remain at their current levels throughout the foreseeable future. consider all factors that affect the yield curve. then identify which of the following shapes that the us treasury yield curve can take. check all that apply.a. downward-sloping yield curveb. upward-sloping yield curvec. inverted yield curve

Which represents a surplus in the market? a market price equals equilibrium price. b quantity supplied is greater than quantity demanded. c market price is less than equilibrium price. d quantity supplied equals quantity demanded.