Scarcity is a characteristic of investment capital that refers to the limited availability of capital relative to the demand for it. Scarcity affects the price and return of capital, as well as the allocation of capital among different issuers and sectors. When capital is scarce, issuers have to compete for it by offering higher returns or lower prices, or by adjusting their financing strategies. When capital is abundant, issuers have more access to it at lower costs or higher prices, or by diversifying their sources of capital. In this case, Raybert has a very short-term investment objective and has decided to purchase money market instruments. There are plenty of 90-day money market securities available for him to choose from, but he can only afford to purchase one. This means that the issuers of these securities are exposed to the scarcity of capital, as they have to attract Raybert and other investors with similar objectives by offering competitive rates or discounts.

References = Canadian Investment Funds Course, Unit 5: Types of Investments, Lesson 1: Economic Factors and Financial Markets, Section 5.1.1: Characteristics of Investment Capital1; CIFC prepkit, Chapter 5: Types of Investments, Question 5.1.1 2