Which of the following is one of the requirements for a MacArthur Fellowship winner?

The MacArthur Fellowship is a program that honors individual men and women for their creativity. American businessman John MacArthur used his own money to establish the MacArthur Foundation in nineteen-seventy. It began to operate after he died eight years later.
    To be considered for the award, a person must be nominated. And they should not hold an elective or appointed office in government.
    Each year, several hundred people are appointed to propose nominations. A twelve-member committee studies information about those nominated to identify the great creativity in their work and proposes winners to the foundation’s directors. The foundation does not require or expect reports from individual winners. It also does not ask them how the money will be used.
    635 MacArthur Fellows have been named since the program started in 1981. Between twenty and thirty winners are named each year.
    The twenty-four winners this year work in many different areas. They include scientists, writers, and musicians. Daniela Rus is a professor at Dartmouth College in New Hampshire. She is a computer scientist who develops robots that change shape to deal with changes in their environment.
    Brian Tucker from California is another winner. Mister Tucker is an earthquake expert. He is the president of a non-profit group called GeoHazards International. His group works with local officials in developing countries to make their areas safer against earthquakes. Mister Tucker says that being recognized as a MacArthur Fellow will make a huge difference for his company.