Final answer:
John Scopes was the teacher who was put on trial for discussing Darwin and evolution.
Step-by-step explanation:
The teacher who was put on trial for discussing Darwin and evolution was A) John Scopes.
The trial, known as the Scopes Monkey Trial, took place in Tennessee in 1925 and involved John Scopes, a high school teacher who violated a state law that forbade the teaching of evolution. The trial became emblematic of the culture wars between conservative Christian fundamentalists and more secular and liberal individuals.