Select the option that can be used as a one-word substitute for the given group of words.

One who makes an active effort to promote human welfare

Philanthropist

The option that can be used as a one-word substitute for the phrase "one who makes an active effort to promote human welfare" is philanthropist.

• Philosopher is a person who studies and reflects on the nature of existence, knowledge, values, reason, and the good life.
• Philanderer is a person who engages in casual sexual relationships with many different people.
• Physicist is a scientist who studies matter and energy and their interactions.

Philanthropist comes from the Greek words "philos" (love) and "anthropos" (humankind). It means "lover of humankind." A philanthropist is someone who donates money or time to help others. They may work to improve the lives of people in need, or they may support causes that they believe in.