Outside of his job as an IT associate at a telecommunications company, Samuel volunteers for Big Brothers Big Sisters $($BBBS$).$ Samuel knows that his company sometimes donates to nonprofits in the community, so he puts together a proposal suggesting that the company partner with BBBS to provide free or reduced$-$cost internet access to participants. In his proposal, Samuel mentions that the company could use this partnership with BBBS to garner goodwill within the community. What Samuel is proposing is a type of $\_\_\_\_\_\_\_\_\_\_\_.$

sustainable development

cause$-$related marketing

planned obsolescence

green marketing