I'd say the answer is A) like rivers, people keep moving and finding new paths.
He wants to say that even black people will manage to find a good future, following a new path, the same way any other human being will.
The other examples do not seem correct to me.
I believe the quotation you provided should say "best" instead of "test" as there is a famous quotation by Thomas Tusser that reads as follows: "Seek home for rest, for home is best." This quotation could mean many things to many people. One possible meaning/interpretation of this quotation is that people often find comfort at home, and for the optimal rest, the prime place that should be sought is where one dwells or the house within which one grew up.
Answer:
At the zoo, the Dursleys spoil Dudley and his friend Piers, neglecting Harry as usual. In the reptile house, Harry pays close attention to a boa constrictor and is astonished when he is able to have a conversation with it. Noticing what Harry is doing, Piers calls over Mr. Dursley and Dudley, who pushes Harry aside to get a better look at the snake. At this moment, the glass front of the snake’s tank vanishes and the boa constrictor slithers out onto the floor. Dudley and Piers claim that the snake attacked them. The Dursleys are in shock. At home, Harry is punished for the snake incident, being sent to his cupboard without any food, though he feels he had nothing to do with what happened.
