If an advertisement says pressure cooker saves fuel and is economical, it is impacting the attitude change by using message characteristic that contains-

Rational appeal

The correct answer is Option (2) → Rational appeal

Message characteristics : The message is the information that is presented in order to bring about an attitude change. Attitudes will change when the amount of information that is given about the topic is just enough, neither too much nor too little. Whether the message contains a rational or an emotional appeal, also makes a difference. For example, an advertisement for cooking food in a pressure cooker may point out that this saves fuel such as cooking gas (LPG) and is economical (rational appeal). Alternatively, the advertisement may say that pressure-cooking preserves nutrition, and that if one cares for the family, nutrition would be a major concern (emotional appeal)