Directions: Select the option that fills in the blank most suitably.

Even detractors who warn of its potential for abuse by powerful despots agree that genetic engineering, if used ________, can reduce the incidence of the sort of physical and mental deformities that any society would want to eliminate.

The missing word must contrast with the motion of abuse of genetic engineering, while at the same time be consistent with the desirable goal of reducing the incidence of deformities. Only (2) accomplishes both. To use the technology 'discriminately' would be to conscientiously apply it only towards certain ends (such as reducing deformities) and not towards others (such as creating a master race that dominates others).