A scientist traveled to the Equator to calculate the value of g, the acceleration of gravity. He got g = 9.7971 meters per second squared. The known value of the acceleration at that latitude is g = 9

A scientist traveled to the Equator to calculate the value of g, the acceleration of gravity. He got g = 9.7971 meters per second squared. The known value of the acceleration at that latitude is g = 9.78 meters per second squared. To which of the following values should the error he made be rounded?