Final answer:
Sasha descended from 212 feet above sea level to 80 feet below sea level, which means she has gone a total of 292 feet below her starting position, relative to sea level.
Step-by-step explanation:
Sasha's home is 212 feet above sea level, and she participated in a scuba dive in which she descended to 80 feet below sea level. The inference that describes Sasha's change in position from her home to the lowest point of her dive is by finding the difference in her altitude when at home versus her depth when diving. To find Sasha's new position relative to sea level after the dive, you add the two absolute values since she is going from an elevation above sea level to a depth below it.
212 feet (above sea level) + 80 feet (below sea level) = 292 feet
Therefore, Sasha's change in position indicates that, from her home to the lowest point of the dive, she has moved a total of 292 feet below sea level, which corresponds to option b).