It's the last one. we know this because it talks about how even with the smart hands of a scientist, the plan is not completely foolproof, or safe
Because it give you an opportunity to save up a lot and spend your expenses how every you wish to.
Answer:
B is correct
Explanation:
The results of one's actions are not always immediately seen, and change happens in small increments.
The teacher was unhappy that the students did not seem to have improved lives in the short term, but when a former student comes back and says how his life was made better, the teacher realized that he did help the student after all.
