EVIL : CONSCIENCE * a) right : wrong
b) harmful : bad
c) useless : value
d) morals : ethics

morals : ethics

Explanation:

I'm not too sure. However, I do know that evil and conscience are not complete opposites, so we can rule out a) and c).

Evil and conscience are definitely not similar, so we rule out b).

The only one left is d), and so that would be the most logical answer.

answer; /// the correct answer to the above statement is (a) because of the decline on native american labor forces;

the author is showing that it is the insatisfaction of basic needs that brings about the protests such as the strikes.if workers do not earn enough to buy food and feed their families and themselves in order to continue working, what is the use of working? besides, another message from the author is that of the owners of factories should be worried about ensuring their furure by having a second and third generation of workers in their industries.if they do not hear the workers demands, they will not have any more workers to make their pockets full.