I think they are all right.
The answer is C. 42% of smokers smoked their first cig in their teens.
A material safety data sheet (MSDS) provides information on materials and chemical products. Both of these technicians are correct since the MSDS contains several sections including two sections referring to the toxicological information and the physical and chemical properties of the material. The physical and chemical properties involve information such as freezing/melting point, viscosity, solubility in water and others. The toxicological information should include information on the short- and long-term effects of exposure to this material and the several types of toxicity that this material could cause.
The implementation in psychology is most successful when the person could be able to tackle one habit at a time, where in, the person could focus in each and to effectively use this method in quitting the person's habits. The implementation has the capability of helping an individual in modifying his or her behavior and habits to reach their goals.
