Clarence darrow was the defense attorney in the infamous "scopes trial" involving the teaching of evolution in public schools. the situation he is describing in this passage refers to situations which could be seen as a threat to knowledge, as well as a threat to which amendment?

I believe the answer is the first amendment.
The first amendment of United States both guaranteed the freeodom of speech and prohibit the establishment in making any regulations that only benefiit a ceratin religion.
The banning of evolution subject in school both violate the right to freedom of speech for the children and the free religion clause of the Students.

The answer is closed primary.