Answer:
B). Discrimination can be subtle and indirect.
Step-by-step explanation:
The theme that seems to be associated with the key idea of the article would be that 'discrimination can be tenuous and indirect.' The author displays that although the blacks have come a long way in their struggle to attain equality and they are not likely to face apparent obstacles, the indirect and subtle discrimination still exists. This discrimination is reflected in the display of lesser availability of units to blacks in comparison to whites irrespective of possessing similar qaulifications, being asked more questions, etc. Thus, this justifies the indirect discrimination and hence, option B is the correct answer.