Which one is it? Can someone pls help it would reallly warm my heart

After fidel castro became the leader of cuba, many cubans moved to the united states. why did cubans leave their home country? a. job opportunities b. religious reasons c. political reasons d. educational opportunities

How do economists measure the success, or shortcomings, of the economy?

If a swimmer is traveling at a constant speed of 0.85 m/s,how long would it take to swim the length of a 50m olympic sized pool?