Formas de trabajo ante la pandemia

answer; /// the only one thats make little sense is (c) fair credit billing act;

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.        

u idek                                                                                                                                               /

rain should be the answer.