The proponent of the unit method is

John Dewey
Herbart Spencer
H.C.Morrison
B.S. Bloom

The correct answer is (c) H.C.Morrison.

The unit method is a teaching method that organizes instruction around a central theme or topic. This method is based on the idea that students learn best when they are able to see how different concepts are related to each other. The unit method typically involves a series of lessons that are designed to help students explore the central theme in depth. These lessons may include lectures, discussions, group work, and hands-on activities.

H.C. Morrison was a professor of education at the University of Chicago who developed the unit method in the early 20th century. He believed that the unit method was the best way to help students learn how to think critically and solve problems. The unit method is still used in some schools today, and it is considered to be a progressive teaching method.

(a) John Dewey was an American philosopher and educator who is considered to be one of the founders of progressive education. He believed that education should be child-centered and that students should learn by doing. Dewey did not develop the unit method, but he did write about the importance of organizing instruction around central themes.

(b) Herbart Spencer was an English philosopher and educational reformer who is considered to be one of the founders of scientific education. He believed that education should be based on the scientific method and that students should learn by observing the world around them. Spencer did not develop the unit method, but he did write about the importance of organizing instruction around central themes.

(d) B.S. Bloom was an American psychologist who is considered to be one of the founders of educational psychology. He developed a taxonomy of educational objectives that is still used today. Bloom did not develop the unit method, but he did write about the importance of organizing instruction around central themes.