Read the passage and answer the question.
Three hundred thirty-one years later, humans did indeed land on the moon, aboard a chariot called Apollo 11, as part of an ambitious investment
in science and technology conducted by a relatively young country called the United States of America. That enterprise drove a half-century of
unprecedented wealth and prosperity that today we take for granted. Now, as our interest in science wanes, America is poised to fall behind the
rest of the industrialized world in every measure of technological proficiency.
For the last 30 years, more and more students in America's science and engineering graduate schools have been foreign-born. They would come
to the US, earn their degrees and stay, directly entering the high-tech workforce. Today, with emerging economic opportunities back in India,
China, and Eastern Europe, many graduates simply return home.
Science and technology are the greatest engines of economic growth the world has ever seen. Without regenerating homegrown interest in
these fields, the comfortable lifestyle to which Americans have become accustomed will draw to a rapid close.
According to the passage, what does the word regenerating mean?
O subtracting from
O adding to
O promoting
regrow