7816. The growing disparity between the rich and the poor has been a cause of global concern.

✅ The correct answer is option D.
Similar : having a resemblance in appearance, character, or quantity, without being identical.

Diversity : the state of being diverse.

Segregation : the action or state of setting someone or something apart from others.

Inequality : difference in size, degree, circumstances, etc.; lack of equality.

Disparity : a great difference.

Synonym of Disparity is Inequality