Final answer:
Eugenics is a pseudoscientific field of study focused on improving the genetic makeup of the human race through preventing the reproduction of what it deems to be inferior individuals.
Step-by-step explanation:
Eugenics is a pseudoscientific field of study that aims to improve the genetic makeup of the human race by preventing the reproduction of what it considers to be inherently inferior individuals. It gained popularity in the early 20th century, but fell into disrepute when Nazi Germany implemented an extensive eugenics program. This program included forced sterilizations and the killing of disabled individuals in an effort to create a genetically superior race.