Is 128 a square number

Which statement describes the term economics? a. it is the study of using limited resources to fulfill wants and needs. b. it is the study of how governments fulfill the wants and needs of nations. c. it is the study of how people spend their money to fulfill wants and needs.

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

8.74 rounded to the nearest whole number