In the Event That There Is Not an Acceptable Model

Multiple Choice

In the event that there is not an acceptable model of the data-generating process within which the treatment effect is identified using samples from the population, the analyst should do what?

A) Collect more data.
B) Re-run the experiment.
C) Consider alternative data populations (e.g., additional variables) before attempting to estimate the effect.
D) Run a probit/logit model.