Research suggests that fairness plays
a. no role because consumers do not tip at restaurants they'll never visit again.
b. a role because it generates network externalities.
c. a role only when it is required.
d. a role because consumers donate money to charity.
e. a role only when it provides a financial benefit.

D. a role because consumers donate money to charity

Explanation:

Charities seeking to promote welfare and humanitarian relief causes should employ an emotion that prioritizes the ethical concerns of care, but charities seeking to promote justice and equality causes should employ an emotion that prioritizes ethical concerns of fairness.

this headline suggests that midterm congressional   elections are at the corner and trump administration wants to activate his base by vowing to clamp down on immigrants and immigration as trump had said during his election campaign around two years ago. when a baby is born in usa, the baby becomes citizen of usa for 85 years and trump wants to end this rule of birthright citizenship to control illegal immigration and this what he said in an interview""we’re the only country in the world where a person comes in and has a baby, and the baby is essentially a citizen of the united states for 85 years, with all of those benefits,” "