Which of the following accelerations is the smallest in magnitude (ignore positive or negative signs)? A.)Not enough information
B.)acceleration from 0 to 30 m/s in 2 s
C.)deceleration from 30 m/s to 10 m/s in 1.5 s
D.)gravity on Earth

this allows people to make the best decision or pursue the best option. when alternatives are weighed using their advantages and disadvantages, the option whose disadvantages outweigh the advantages (based on a qualitative or quantitative analysis) are shunned while those whose advantages outweigh their disadvantages are pursued.  

it takes about 30 days for it to break down