Help ASAP pls im being timed pls help

C

Explanation:

I beleive it is C since Lincoln was a WHig member

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

answer; 11th circuit or federal circuit;