1. Which of the following is an advancement of the Mayan civilization?: A. Relatively accurate 366-day calendar
B. System of numbers using the concept of zero
C. Building of the great pyramids
D. Making of silk

he risk-return relationship. generally, the higher the potential return of an investment, the higher the risk. there is no guarantee that you will actually get a higher return by accepting more risk. diversification enables you to reduce the risk of your portfolio without sacrificing potential returns.

explanation:

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