EEG, PET and TMS are all :

A) laboratory observations that introduce experimental bias into the study
B) Descriptive methods for studying the brain
C) Standardized methods for studying the brain
D) experimentally controlled technologies for brain-wave analysis

I am confused between B and C although I think B is the better choice

2 answers

Aren't these different types of tests/scans? B doesn't work.
Yes they are different types of tests/Scans used to study the brain, so then I guess C would be the better choice. Thank you