This is a reality that only _(1)_countries have been successful in luring their talented _(2)_ back home. China, Korea, Ireland etc. countries got relative success in _(3)_ return migration due to the opening of their economies and aggressive policies to _(4)_ domestic investments in innovation and R&D.Countries which are capable to create opportunities for R&D, innovation, and entrepreneurship can _(5)_ return migration and capital flow.
Choose the most suitable word among the following options to fill the blank numbered _(5)_