Swan (2005) points out that putting a prefix at the beginning of a word changes ...

Questão de Inglês da banca IF Sul Rio Grandense aplicada no concurso IF Sul Rio Grandense (2025). Confira a resolução completa abaixo:

Swan (2005) points out that putting a prefix at the beginning of a word changes its meaning without changing its basic structure. Prefixes are an essential tool in English for creating new words and adding nuance to existing ones. They enhance the accuracy and clarity of communication.
Which of the following words contains a prefix that means "opposite of"?