Gina smokes two packs of cigarettes a day, but lately she has begun to seriously think about quitting. according to the transtheoretical model, gina is in the stage.

Contemplation                                                                                                          

Explanation:    

The transtheoretical model is also referred to as TTM and is a model that is based on behavior change. It states that a person goes through six distinct stages of behavior change in his or her life including maintenance, preparation, precontemplation, action, contemplation, and termination.

Contemplation stage: The contemplation stage is defined as the stage in which an individual tends to change or alter within six months. The person is generally aware of the positive aspect of the change and at the same time, he or she is aware of the negative aspect of the change.

your question is incomplete

explanation:

answer; a cost benefit analysis;