The answer is C. Artistry
Colic is always a possible cause, however it is pretty normal for babies to experience crying as stomach pain is inevitable. It could also be the formula milk the baby is drinking, trying lactose free formula may be a solution.
I'm not completely sure what you are talking about when you say "abstinent", but I am going to assume that you are talking about alcohol or any other unhealthy habits. If that is the case, then yes, being abstinent will help you prioritize other life goals and be more successful, so, the answer would be A. True.
I hope this is helpful! :D
Department of Heath and Human Services (HHS)