What term refers to a person who donates money to promote the welfare of others?

The term that best fits the description of a person who donates money to promote the welfare of others is "philanthropist." A philanthropist is typically involved in charitable activities, often providing financial support to causes that aim to improve the quality of life for various communities and individuals.

Philanthropy focuses on the idea of altruism and the desire to make a positive impact, emphasizing contributions that foster social well-being. This can include funding for education, healthcare, poverty alleviation, or the arts. The actions of philanthropists often reflect a commitment to social change and community development, highlighting the broader intent behind their financial support.

While other terms like benefactor and humanitarian also relate to aiding others, they do not specifically denote financial contributions. A benefactor generally refers to someone who provides help, particularly financial assistance, but it lacks the broader implication of promoting welfare associated with philanthropy. Humanitarian, on the other hand, refers more broadly to efforts made to alleviate human suffering, which can include actions beyond financial donations, such as volunteering or advocacy. Thus, "philanthropist" is the most precise term that encapsulates the act of donating money specifically for the welfare of others.