The correct answer is: Helping a nonsmoker qualifies as institutionalized cultural capital because smoking is prohibited in most public spaces and some work places give preferences to nonsmokers when hiring.
The term institutionalized cultural capital refers to the act of having assets that helps the individual to climb a higher status in societal hierarchy. When the cultural capital is institutionalized is when that type of asset is recognized as a positive one by an institution. In this case, the fact of being a nonsmoker is recognized in some work places, that give preferences to these ones when hiring.