Who supported the Four Element Concept of Empedocles?
(A) Dalton
(B) Avogadro
(C) Einstein
(D) Aristotle

Hint: To answer this question we must know a little basic information. Empedocles was a Greek pre-Socratic philosopher and also a native citizen of Akragas which is a Greek city in Sicily. Empedocles' philosophy is mainly known for originating the cosmogonic theory of the four classical elements. He also proposed the forces which he called Love and Strife which would mix and also separate the elements, respectively.

Complete answer:
Empedocles established four ultimate elements which would make all the structures in the world which are fire, air, water, earth. Empedocles named these four elements as "roots", which he also identified with the mythical names of Zeus, Hera, Nestis, and Aidoneus. Empedocles never used the term "element" but it is first used by Plato.
Although acquainted with the theories of the Eleatics and the Pythagoreans, Empedocles did not belong to any one particular school. Being eclectic in his thinking, he combined much that had been suggested by Parmenides, Pythagoras and the Ionian schools. Aristotle mentions Empedocles among the Ionic philosophers, and he places him in a very close relation to the atomist philosophers and to Anaxagoras.
Hence Aristotle supported the Four Element Concept of Empedocles
Therefore, option (D) is correct.

Note:
According to the different proportions in which the four unchangeable and indestructible elements like fire, air, water and earth are combined with each other the difference of the structure is produced. Empedocles, like the atomists, found the real process which corresponds to what is popularly termed growth, increase or decrease. Nothing new comes or can come into being; the only change that can happen is a change in the juxtaposition of element with an element. This theory of the four elements became the standard dogma for the following two thousand years.