Final answer:
Esso's ad campaign on global warming is an example of advocacy advertising, which aims to shape public opinion or policy on an issue.
Step-by-step explanation:
Esso's ad campaign, which addressed global warming and suggested taking time to understand the issue before acting hastily, is an example of advocacy advertising. This type of advertising actively promotes a particular cause or viewpoint and seeks to influence public opinion or policy. The ad by Esso falls into this category, as it is attempting to shape the public's response to the environmental problem of global warming by advocating for a thoughtful approach rather than immediate action.