Discussion

Explanation:

In the last paragraph, it is said that the findings of Human Genome project deny any genetic differences between ‘races’ and that it is the environment impinging on gene function. This indicates that race is not entirely a biological function and it is somewhat an environmental construct. The environment is the society in which the individual grows up. Hence, option (b) follows.
Discrimination in total- including caste has not been spoken about in this context. Therefore, options 3 and 4 are eliminated.
Option 1 is contrary to what the last paragraph says. The project does not reinforce racial differences. It denies it.
Hence, the correct answer is option 2.

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