Answer:
Social responsibility.
Explanation:
Social Responsibility can be defined as an ethical responsibility of an individual or a group of people or an organization that recognizes his/her responsibility for the cause of society on a larger scale. A person who is socially responsible holds himself/herself obligated to work for the betterment in the society.
In the given case, Haagen-Dazs is an example of social responsibility, as it is working for the betterment of the society on a larger scale. They considered the problem of disappearing of honey bees as a social threat that will hamper in the pollination of food and came forward to work on the cause by launching a microsite to create awareness in the society for the same. And also, by launching a campaign on twitter.
So, the correct answer is social responsibility.