Answer explanation

Hi, the passage never actually tells us A. While it notes that both researchers and those who put research into practice (technicians and engineers I assume) are needed, we have no idea if there is more of a need for one than for the other. More so, the passage only touches on Europe and Japan. This is less than a tenth of the world. We have no idea about worldwide trends: perhaps there are plenty of Indian and Brazilians who have the skills in question but simply don't want to move.