Which precedent did christian scholars set

The choices can be found elsewhere and as follows:

a. The use of experimentation to refute tenets of faith

b. The use of natural science to resolve religious questions

c. The use of observation to prove crimes of heresy

d. The use of reason to support belief

I think the correct answer from the choices is option D. The precedent that christian scholars set is the use of reason to support belief. Hope this answers the question. Have a nice day.