Which of the following is a performance measure that is used to evaluate the efficiency of an investment or to compare the efficiency of a number of different investments? 

Answer options:

A. Return On Security Investment
B. Total Cost of Ownership
C. Return On Investment
D. Redundant Array of Inexpensive Disks

C

Return On Investment (ROI) is a performance measure used to evaluate the efficiency of an investment or to compare the efficiency of a number of different investments. To calculate ROI, the benefit (return) of an investment is divided by the cost of the investment; the result is expressed as a percentage or a ratio. The return on investment formula: ROI = (Gain from investment - Cost of investment) / Cost of investment In the above formula "gains from investment", refers to the proceeds obtained from selling the investment of interest. Incorrect Answers: A, B: These options are not related to the measurement of efficiency of an investment. D: RAID is described as a redundant array of inexpensive disks. It is a technology that allows computer users to achieve high levels of storage reliability from low- cost and less reliable PC-class disk-drive components, via the technique of arranging the devices into arrays for redundancy.