Context: UNT will partner with Haskell Indian Nations University in Lawrence , Kan. , and the U.S. Environmental Protection Agency to build a diverse workforce that can meet the country 's environmental demands . Under a memorandum of understanding signed Sept. 5 , the groups pledged to work together to increase the number of American Indian students pursuing professional careers in environmental fields , including policy , economics and science . " This new partnership expands the long tradition our university has had in working with the EPA to find solutions to some of our nation 's most pressing environmental and societal problems , " President Gretchen M. Bataille says .

Question: What may have caused the UNT to partner with Haskell Indian Nations University ?
Options:
0. None of the above choices .
1. They both wanted to start working with the EPA .
2. They wanted to promote uniformity in employees .
3. They wanted to promote variety in employees .
Answer: 3